Year	current US$
1980	638963852.8914925
1981	506382336.9759113
1982	306750109.53002167
1983	239328586.8699146
1984	143492488.1086492
1985	142900716.92377633
1986	170080845.05541667
1987	210956035.02644712
1988	293773780.12792486
1989	293722758.91794276
1990	335024596.1075216
1991	263982352.16564655
1992	250470519.1076168
1993	279193434.3132254
1994	193974365.9877113
1995	223180532.07684562
1996	263903830.15089965
1997	239016841.02759466
1998	271879843.39906424
1999	237264725.00761363
2000	289158348.04823655
2001	316344469.56129336
2002	364814520.8279271
2003	440381493.26084435
2004	535940215.4783329
2005	798687867.7541242
2006	904833527.643289
2007	1077811946.1696596
2008	1862489150.3092933
2009	2090205871.5373528
2010	2502211979.572229
2011	2768986181.404803
2012	2715435401.3719053
2013	3026046045.947182
2014	3344076738.263308
2015	3157620199.862825
2016	2808824212.7101684
2017	2885201330.0456767
2018	3649251426.1383586
2019	3915622046.3464813
2020	3893397722.031132
2021	4256527673.784683
2022	4571632305.563132
2023	4448128181.898381