Year	current US$
1990	73048693.212751
1991	75350721.6448582
1992	80707070.7804085
1993	76137327.985779
1994	82426635.5646541
1995	85755025.7159928
1996	81966480.4416308
1997	81694109.6422506
1998	75806883.8732151
1999	74940167.6015837
2000	74303520.8671814
2001	64386496.9755869
2002	56634551.5296096
2003	78313582.2333599
2004	93488205.50055
2005	101933217.867656
2006	107013023.069407
2007	116111000.079823
2008	110515455.498952
2009	112943234.927723
2010	136198862.347905
2011	140803244.623506
2012	137489266.429103
2013	121596123.335984
2014	111591253.483104
2015	94634701.1246765
2016	86515773.1980229
2017	106515059.241759
2018	113192733.590588
2019	100604057.83554
2020	85727130.2632336
2021	89505099.8941083