Year	current US$
1995	6701955911.917495
1996	7535736006.481853
1997	8136593331.96191
1998	8619570778.963766
1999	8961427912.594133
2000	7995682016.254725
2001	8588341996.3785515
2002	9514753151.69746
2003	13599193301.975586
2004	15842597634.889967
2005	18005450109.839535
2006	20141265480.236736
2007	23805997302.66924
2008	24095314984.578186
2009	22348248631.649826
2010	25073606727.198177
2011	27688408245.746353
2012	29953028926.232494
2013	29881879339.977615
2014	31015771032.445934
2015	28232287981.018875
2016	28500418419.091953
2017	32478410641.1158
2018	34873646197.84023
2019	34263192235.31888