Year	current US$
1990	64134058.771858
1991	68047613.8554438
1992	68159300.0006897
1993	67142549.6044526
1994	76436354.8626548
1995	80709973.3571816
1996	84811496.6859472
1997	86482946.9020615
1998	87103012.9597835
1999	63574132.1561943
2000	58460293.1838625
2001	73114111.3506749
2002	87653653.7228871
2003	100804474.657601
2004	111074906.73542
2005	127129546.101021
2006	148877150.134737
2007	167452473.378457
2008	203128232.029756
2009	210776554.265396
2010	237066220.979165
2011	255849195.948218
2012	287633010.118372
2013	302086024.403578
2014	317212262.655854
2015	318284208.321876
2016	317276069.935263
2017	314295598.747217
2018	309968610.347232
2019	305147437.468636
2020	307476831.96102
2021	316497138.632128