instruments and musical instruments. The largest exported goods are chemicals (34% of exported goods), machines/electronics (20.9%), and precision instruments/watches (16.9%). The service sector – especially banking and insurance, commodities trading, tourism, and international organisations – is another important industry for Switzerland. Exported services amount to a third of exports. Agricultural protectionism—a rare exception to Switzerland's free trade policies—contributes to high food prices. Product market liberalisation is lagging behind many EU countries according to the OECD. Apart from agriculture, economic and trade barriers between the European Union and Switzerland are minimal, and Switzerland has free trade agreements with many countries. Switzerland is a member of the European Free Trade Association (EFTA). Taxation and government spending Switzerland is a tax haven. The private sector economy dominates. It features low tax rates; tax revenue to GDP ratio is one of the smallest of developed countries. The Swiss Federal budget reached 62.8 billion Swiss francs in 2010, 11.35% of GDP; however, canton and municipality budgets are not counted as part of the federal budget. Total government spending is closer to 33.8% of GDP. The main sources of income for the federal government are the value-added tax (33% of tax revenue) and the direct federal tax (29%). The main areas of expenditure are in social welfare and finance/taxes. The expenditures of the Swiss Confederation have been growing from 7% of GDP in 1960 to 9.7% in 1990 and 10.7% in 2010. While the social welfare and finance sectors and tax grew from 35% in 1990 to 48.2% in 2010, a significant reduction of expenditures has been occurring in agriculture and national defence; from 26.5% to 12.4% (estimation for the year 2015). Labour force Slightly more than 5 million people work in Switzerland; about 25% of employees belonged to a trade union in 2004. Switzerland has a more flexible labor market than neighbouring countries and the unemployment rate is consistently low. The unemployment rate increased from 1.7% in June 2000 to 4.4% in December 2009. It then decreased to 3.2% in 2014 and held steady for several years, before further dropping to 2.5% in 2018 and 2.3% in 2019. Population growth (from net immigration) reached 0.52% of population in 2004, increased in the following years before falling to 0.54% again in 2017. The foreign citizen population was 28.9% in 2015, about the same as in Australia. In 2016, the median monthly gross income in Switzerland was