Year	constant 2010 US$
1981	166029652825.58
1982	132321356684.116
1983	113323514297.73
1984	98275450660.2776
1985	93588819051.9272
1986	86668525552.2971
1987	75007906742.2852
1988	81547082123.015
1989	85250632763.8932
1990	88437092098.2112
1991	88125791845.4671
1992	84663675813.7641
1993	88226873406.1248
1994	94233198955.4961
1995	94313328993.6792
1996	101166919832.273
1997	108319466089.126
1998	112733374066.432
1999	107685802099.362
2000	120576867979.802
2001	126117164355.948
2002	137614316153.302
2003	158949774235.606
2004	168698249567.663
2005	177214459872.233
2006	207711626704.206
2007	238583778496.15
2008	262506044418.11
2009	274015710355.193
2010	292578458341.393
2011	306599186288.274
2012	327856182952.093
2013	344301708295.73
2014	366664105857.64
2015	371413899896.217
2016	357896815070.493
2017	360001026466.21