Foreign investment in Latvia is still modest compared with the levels in north-central Europe. A law expanding the scope for selling land, including to foreigners, was passed in 1997. Representing 10.2% of Latvia's total foreign direct investment, American companies invested $127 million in 1999. In the same year, the United States of America exported $58.2 million of goods and services to Latvia and imported $87.9 million. Eager to join Western economic institutions like the World Trade Organization, OECD, and the European Union, Latvia signed a Europe Agreement with the EU in 1995—with a 4-year transition period. Latvia and the United States have signed treaties on investment, trade, and intellectual property protection and avoidance of double taxation.