Year	Millions of 2000 Dollars
1973-01-01	1381.08
1974-01-01	1793.52
1975-01-01	1218.60
1976-01-01	1288.35
1977-01-01	1996.13
1978-01-01	2112.29
1979-01-01	2366.94
1980-01-01	2181.86
1981-01-01	1900.75
1982-01-01	1705.10
1983-01-01	1606.48
1984-01-01	1653.98
1985-01-01	1624.36
1986-01-01	1917.05
1987-01-01	2039.55
1988-01-01	2167.54
1989-01-01	2097.80
1990-01-01	1859.14
1991-01-01	2123.17
1992-01-01	2239.50
1993-01-01	2583.40
1994-01-01	2068.23
1995-01-01	2025.26
1996-01-01	2540.43
1997-01-01	2068.75
1998-01-01	1742.63
1999-01-01	1440.96
2000-01-01	1284.07
2001-01-01	1097.06
2002-01-01	1075.92
2003-01-01	1216.78
2004-01-01	1442.85
2005-01-01	1823.57
2006-01-01	2523.34
2007-01-01	3308.72
2008-01-01	3893.90
2009-01-01	3633.13
2010-01-01	4039.90
2011-01-01	5759.38
2012-01-01	6380.18
2013-01-01	5780.51
2014-01-01	5661.26
2015-01-01	5298.81
2016-01-01	5429.82