Year	current US$
1990	34777509.1030814
1991	39196315.7378992
1992	55593155.6478878
1993	58612058.2319287
1994	71021876.1787082
1995	73531149.2931076
1996	72105379.6734483
1997	74336891.1176528
1998	85938132.3605944
1999	89287567.7623268
2000	91879975.7270655
2001	105185077.763541
2002	111243245.480825
2003	121874724.710526
2004	131050870.339067
2005	145879363.441969
2006	160876053.330787
2007	195724683.34662
2008	201819801.878363
2009	198845829.021664
2010	203191308.659984
2011	221624910.777553
2012	231471855.698857
2013	251491510.250421
2014	263642024.403804
2015	262187053.583693
2016	290165355.870747
2017	309065195.263913
2018	327926096.549385
2019	336018297.861466
2020	327708878.342817
2021	369622359.199126