Agriculture in Lithuania dates to the Neolithic period, about 3,000 to 1,000 BC. It has been one of Lithuania's most important occupations for many centuries. Lithuania's accession to the European Union in 2004 ushered in a new agricultural era. The EU pursues a very high standard of food safety and purity. In 1999, the Seimas (parliament) of Lithuania adopted a Law on Product Safety, and in 2000 it adopted a Law on Food. The reform of the agricultural market has been carried out on the basis of these two laws.