Year	Millions of 2000 Dollars
1960-01-01	56483.9
1961-01-01	65584.2
1962-01-01	119196.0
1963-01-01	109170.0
1964-01-01	124399.0
1965-01-01	140938.0
1966-01-01	151653.0
1967-01-01	170554.0
1968-01-01	188579.0
1969-01-01	208952.0
1970-01-01	262339.0
1971-01-01	317671.0
1972-01-01	371094.0
1973-01-01	391747.0
1974-01-01	641525.0
1975-01-01	710417.0
1976-01-01	637123.0
1977-01-01	729269.0
1978-01-01	869886.0
1979-01-01	949065.0
1980-01-01	817647.0
1981-01-01	647590.0
1982-01-01	653811.0
1983-01-01	587678.0
1984-01-01	543703.0
1985-01-01	667032.0
1986-01-01	887187.0
1987-01-01	1100000.0
1988-01-01	993408.0
1989-01-01	1100000.0
1990-01-01	1200000.0
1991-01-01	1300000.0
1992-01-01	1000000.0
1993-01-01	935487.0
1994-01-01	969755.0
1995-01-01	995819.0
1996-01-01	1000000.0
1997-01-01	823532.0
1998-01-01	868629.0
1999-01-01	847607.0
2000-01-01	790782.0
2001-01-01	786662.0
2002-01-01	1000000.0
2003-01-01	1300000.0
2004-01-01	1400000.0
2005-01-01	1300000.0
2006-01-01	1400000.0
2007-01-01	1900000.0
2008-01-01	1800000.0
2009-01-01	1900000.0
2010-01-01	1700000.0
2011-01-01	1600000.0
2012-01-01	1700000.0
2013-01-01	1800000.0
2014-01-01	1600000.0
2015-01-01	1500000.0
2016-01-01	1500000.0