Year	current US$
1990	1817639.8485931
1991	1793295.49127643
1992	2009391.16799595
1993	2243523.76007383
1994	2342989.72960687
1995	2445942.59602853
1996	2705941.40054883
1997	2814537.08017839
1998	3937404.47070452
1999	4260241.801781
2000	4454786.70191833
2001	4851710.22894562
2002	5038190.48302573
2003	4832963.15001852
2004	5074360.3424941
2005	5118574.14369385
2006	5640471.53354551
2007	6180779.41351115
2008	4562415.79351393
2009	4694971.13676967
2010	4858301.29210666
2011	5667393.47136105
2012	6214009.80064961
2013	3879046.23928553
2014	4377198.24384483
2015	6606835.51827981
2016	7541426.16407793
2017	8231760.37597165
2018	9011111.66138743
2019	9786940.76750756
2020	10955627.7217198
2021	12649792.5455148