Year	current US$
1980	6088384615.384616
1981	6859642857.142858
1982	6424733333.333333
1983	6118555555.555555
1984	6729388888.888889
1985	7411526315.789474
1986	8802352941.176472
1987	11977307692.307693
1988	10352294117.647058
1989	10589277777.777779
1990	7577727272.727272
1991	4290322580.6451616
1992	5479381443.298969
1993	4964847430.600855
1994	4429059040.590406
1995	4353456104.568936
1996	4588940294.228423
1997	4174242023.3560205
1998	5276480125.06547
1999	6449155466.07172
2000	5500642168.348424
2001	6269090423.06798
2002	6827325316.867078
2003	9430004120.731667
2004	13630082743.479975
2005	17080286100.348574
2006	22027466752.00591
2007	31626174947.515743
2008	39341095057.50057
2009	26258387052.74502
2010	27046680675.116924
2011	33851167176.7134
2012	34540852000.262764
2013	36372972092.07578
2014	37537556038.58172
2015	31975159405.491264
2016	31823734223.781765
2017	37202895512.04297
2018	41940673268.52244
2019	41840545475.35916
2020	38138315715.704025
2021	50066516901.49362
2022	62328761709.91709
2023	58631782088.49157