Year	current US$
1995	12022985753.66121
1996	13056166619.66977
1997	13370575462.39926
1998	12870880503.144653
1999	13014276879.967146
2000	13921241262.60025
2001	13476104572.366074
2002	13246966735.615686
2003	13780922245.88832
2004	14676297411.8697
2005	15344961784.433004
2006	16045685398.806051
2007	18924815608.188698
2008	22591415551.839466
2009	21454660122.574574
2010	25282861479.41615
2011	27991904268.49235
2012	26586448751.31771
2013	30610376767.576553
2014	33281220260.346428
2015	31272972771.32201
2016	33071425657.672016
2017	34487341656.54106
2018	35851237175.531
2019	36655168075.57303
2020	36067345728.075905
2021	44545479142.02194