Year	current US$
1976	102618392.303848
1977	120092778.710645
1978	106589050.00154
1979	148366515.791808
1980	183344122.512235
1981	159806151.060359
1982	155303714.354387
1983	148013561.0647
1984	168310499.575986
1985	146367965.128682
1986	106750448.0336
1987	118335121.503993
1988	121318830.500715
1989	93594449.4917672
1990	162973041.863205
1991	179813456.649378
1992	192159753.245314
1993	195073620.651604
1994	272540978.660318
1995	325430935.566527
1996	337872009.005636
1997	371547161.816628
1998	408431886.463041
1999	395546016.525016
2000	393091525.21711
2001	431412531.0206
2002	476678604.88145
2003	492506837.618811
2004	499968415.544352
2005	512755400.804596
2006	577051405.779119
2007	731320003.906387
2008	1026373447.91457
2009	1228297766.25926
2010	1352646269.73079
2011	1505011677.97319
2012	1542140161.24271
2013	1744968206.41274
2014	1902932281.05354
2015	1937884511.12232
2016	2025869999.22436
2017	2213058943.94389
2018	2390169165.21955
2019	2435613261.21767
2020	2201748043.47514
2021	2393602405.97924