Netherlands 64% open

Here (http://www.knmi.nl/nederland-nu/weer/verwachtingen) you can find 5 days forecast, including temperature, precipitation and wind direction. As for historic data, you can get it from here (http://www.knmi.nl/nederland-nu/klimatologie/daggegevens), either per station, or all stations combined for the current year. The data is in CSV format, with some headers and meta data in the beginning of the file.

CBS Portal has online search and display of data with download options.

Regarding the specific datasets requested:

GDP is updated quarterly: http://statline.cbs.nl/Statweb/publication/?DM=SLNL&PA=82602ned&D1=0-17&D2=0-1&D3=96-101&HDR=G1%2cG2&STB=T&VW=D

Unemployment updated monthly: http://statline.cbs.nl/Statweb/publication/?DM=SLNL&PA=37789ksz&D1=7-8&D2=(l-16)-l&VW=T

Population count updated monthly: http://statline.cbs.nl/Statweb/publication/?DM=SLNL&PA=37943ned&D1=7&D2=295,297-298,312,314-315,329,331-332,346,348-349&VW=T

As part of the "BAG" data which contains all addresses and buildings in the Netherlands. The data set is most likely public domain (In this http://geodata.nationaalgeoregister.nl/inspireadressen/atom/inspireadressen.xml the description link yields an XML that specifies public domain), and the national data portal lists the BAG as public domain (although provides faulty links) https://data.overheid.nl/data/dataset/basisregistratie-adressen-en-gebouwen-bag-. The downloaded data set does not contain licensing info.

Cadastre is the data holder but they provide no direct mention of the data set on their own site, just a reference to their paid for services. They are however listed as data holder and contact info in the links above as well.

The data dump is a 1.4 GB zip file, that contains 7 other zip files, yielding over 30GB of data when unpacked, split up in 21MB xml files. This is the full BAG data set, containing all addresses and buildings for all of the Netherlands. From this dataset you need to combine several subsets to get to a full postcode list: The ‘NUM’ files give you address index numbers, its georeferences, the house number and the postcode, and a number that corresponds with a street. The ‘OPR’ files give you the corresponding street name, and the number of the place it is in. The ‘WPL’ files give you the place name, and through a separate table also the municipality it is in. (Do note that is does not include postcodes that are not connected to geolocations, such as PO Boxes) See for a detailed description of the search for the Dutch postcode data; http://www.zylstra.org/blog/2013/10/theoretically-open-post-codes-not-so-much-in-practice/

[No changes from 2013]

Update 2015: The opacity described above remains, but same link to data still valid.

No changes from last year. Data is published here (http://opendata.rijksbegroting.nl/), and is available as CSV, under Creative Commons CC Zero license. It has an overview of expenses, liabilities by departmental budgets.

See last year's comment below: De begrotingsstaten van het Rijk worden op of rond prinsjesdag als open data ontsloten. Deze staten bevatten een artikelsgewijsuitsplitsing van de geraamde verplichtingen,uitgaven en ontvangsten van een begroting. Deze staten worden geregeld bijgewerkt. [No changes from 2013]

QA - review - the license is cc-by 4, as this datasets was found in the CKAN portal, where all datasets share the same license. Data was also timely and was updated to the week of the review.

The full data set is openly licensed (CC-BY) and available via direct download on the PDOK website in scale 1:50,000 (700MB) and 1:10,000 (2GB).

There is further information available on the website of Kadaster (http://www.kadaster.nl) but they do request registration first. Data is available there in several scales starting from 1:5000 until 1:250,000.

The current data is outdated however, with part of the map data from 2013 (also in the prospective release in Nov). Therefore changed 'up-to-date' to 'no'.

Although the data download page at data.overheid.nl states the date of the data set is 26 March 2015, in reality if you download the metdata XML file, it will have a generation date of today. The data is updated daily. Only a dump of metadata is available in bulk, the actual legislative documents must be requested one-by-one. No historical revisions are available, only the latest consolidation.

Laws are also available through a web interface at http://wetten.overheid.nl/zoeken/

Update 2015: no changes apart from the date advertised on the data download page.

Data is made available as monthly Excel downloads on SO2, PM10, PM2.5, NH3, CO, O3, NO, NO2, ZWR and BC also toluene and benzene that are VOCs .

data is also existent in this site http://www.lml.rivm.nl/ http://www.lml.rivm.nl/

License not clear.

All Dutch tender information that is also on TED is available on this website.

The Kadaster provides useful open data but unfortunately not on landownership. Even National and Subnational Governments pay for the service via contracts while the Kadaster is a Zelfstandig Bestuurs Orgaan (ZBO). This means that the organisation is providing national services for the national government (and is funded by the government) while it is not place under the responsibility of a Department/Minister. Effectively this is a good example where citizens pay one time via tax and a second time via the actual service. This hampers service delivery and transparency.

For a fee, users can purchase company data from the Netherlands Chamber of Commerce, which includes "a complete view of an organization; product extracts, history, filings and also where available financial statements and corporate relationships". These are available in digital or paper form.

The Ministry of Finance has stated that it will work the coming five years on publishing expenses as open data.

There is a payment system collecting all transactions of the central government in one place: http://www.dsta.nl/english/Subjects/Payment_systems

2014 entry: The data on elections is not open to the public under EML standard. If this data is open it would enable new applications and insights that have a positive impact on our democracy. At this moment, very little information is available about the elections: On the website of the Election Council the results appear only five weeks after the elections in its database. In this database, only the results on the municipal level is shown, not at the level of polling stations. Although the unofficial results of the local elections were announced one day after the elections (March 20, 2014), one is referred to the websites of local governments for the results. On March 28, 2014 when the last recounts were done, one is still referred to the websites of local governments. On election night, news is followed by calls that are made by news agencies to municipalities. These are not actual open data of the actual results. A misinterpretation of results or an error in the news chain could cause wrong information being spread.

http://openstate.eu/2014/05/elections-data-in-the-netherlands-do-our-votes-count/

Update 2015: Data still not openly available - updated some questions from 'unsure' to 'no' based on what's available via http://www.verkiezingsuitslagen.nl/