Year	current US$
1995	6367846579.824212
1996	6954730832.325838
1997	7615310245.315405
1998	8200503387.151941
1999	8608755550.834288
2000	7615135303.518019
2001	8148869232.659541
2002	8725277586.381866
2003	9519435233.676706
2004	12556181745.333954
2005	14528261482.54569
2006	16586761945.003878
2007	20597775122.152836
2008	23538967570.593906
2009	22630711945.947266
2010	27268022051.145878
2011	25740362369.803272
2012	28635139134.617035
2013	30741012593.13469
2014	33902884985.3656
2015	33715679043.361614
2016	33806058987.527348
2017	37443652752.51996
2018	42040713817.65378
2019	45396369606.83993