LAU2 2016
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Complete metadata in metadata.pdf file. See also http://ec.europa.eu/eurostat/web/nuts/overview
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File naming

pattern: theme_spatilatype_resolution_year_projection_subset.format
example: LAU_BN_01M_2016_3035.geojson

theme:
4-character code of theme (NUTS)

spatialtype: BN/RG/LB
* BN: boundaries (multilines)
* RG: regions (multipolygons)
* LB: labels (points)

resolution: 60M/20M/10M/03M/01M; map scale the data is optimized (generalized) for.

year: the year of NUTS regulation (2016/2013/2010/2006/2003). See http://ec.europa.eu/eurostat/web/nuts/history

projection: 4-digit EPSG code, see http://spatialreference.org/ref/epsg/
* EPSG:4326 (WGS84, coordinates in decimal degrees),
* EPSG:3035 (ETRS 1989 in Lambert Azimutal projection with centre in E52N10, coordinates in meters),
* EPSG:3857 (WGS84 Web Mercator Auxiliary Sphere, coordinates in meters)

format:
* .gdb - file geodatabase (ESRI) http://desktop.arcgis.com/en/arcmap/10.3/manage-data/administer-file-gdbs/file-geodatabases.htm
* .shp.zip - zipped shapefile (ESRI) http://downloads.esri.com/support/whitepapers/mo_/shapefile.pdf
* .geojson - http://geojson.org
* .json - topoJSON https://github.com/topojson/topojson-specification
* .pbf - geobuf - geojson compressed into protocol buffers, see https://github.com/mapbox/geobuf
* .svg.zip - zipped SVG (scalable vector graphics) https://www.w3.org/TR/SVG2/
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Release notes:
2018-01-09 Data reprojected into EPSG:4326,EPSG:3035,EPSG:3857. More strict quality control. Known issues documented in https://webgate.ec.europa.eu/CITnet/jira/browse/GISCO-1582
2018-02-22 Major release of API V2. 1) single countries are available as separate geojson files, 2) map viewer is enabled for geojson, 3) downloadable zip packages now consist of gdb/shp/geojson/topojson/csv (attributes) as well as metadata, 4) zip packages are integrated into API.2019-07-18 Communes 2008, 2006, 2004, 2001 addded.
2019-07-18 Communes 2008, 2006, 2004, 2001 addded.
2020-01-21 Added: communes 2008/2006/2004/2001, local administrative units 2018/2017/2016, urban audit 2018/2014. Additional NUTS 2016 classification: mountain, urban/rural, coastal.
2020-04-06 Added: countries 2020.
2020-02-27 Added: NUTS 2021.
2020-07-06 Added: Urban Audit 2004, Urban Audit 2001, Local Administrative Units 2019.
* 2020-12-05 Fixed broken utf-8 encoding.
* 2021-03-15 Added LAU 2011,2012,2013,2014,2015,2020
* 2021-04-26 Fixed country labels 2001, 2006 (incorrect Kosovo coordinates)
* 2021-06-05 Applied identical field names GISCO_ID,CNTR_CODE,LAU_ID,LAU_NAME,POP_20xx,POP_DENS_20xx,AREA_KM2,YEAR in all LAU versions.