Year	constant 2015 US$
1995	12180712932.362885
1996	12437747126.656635
1997	13123799998.907024
1998	14234343627.007414
1999	14626127052.35468
2000	15248943237.403898
2001	16368146613.615618
2002	17345286849.79882
2003	18780483935.312103
2004	20176461959.167572
2005	22499977226.40507
2006	24906859073.21835
2007	28234828564.980457
2008	27676256504.837097
2009	25700915258.780846
2010	23181081671.16327
2011	23927531987.127724
2012	25005028773.780846
2013	25724575621.173424
2014	26180243689.249985
2015	27135722905.269516
2016	28384176766.64881
2017	29372153615.23475
2018	30473388430.182793
2019	30869582169.270294
2020	30554514903.232403
2021	31659031657.310917
2022	32909914242.40779