Year	constant 2015 US$
1989	62998679.447971955
1990	64606319.69825066
1991	65604830.06952688
1992	65169007.23440308
1993	68053901.57009088
1994	68894974.19224606
1995	70901408.92321406
1996	71882077.545017
1997	80030377.63235623
1998	82965659.22032535
1999	92235389.47053814
2000	98284639.11230682
2001	104029682.4427044
2002	109418787.35396156
2003	121787064.64837891
2004	136389057.25122544
2005	138171977.00009847
2006	124542942.51425739
2007	118978827.07550347
2008	123430119.4265066
2009	130477969.09658404
2010	122830134.56482208
2011	120140423.58895007
2012	129106126.8418568
2013	128209556.51656613
2014	133588978.46831015
2015	142554681.72121686
2016	137337001.05615526
2017	135199308.4295647
2018	133068878.02260903
2019	131188411.42234437
2020	150072244.5847141
2021	175461950.65552306
2022	169653161.17499733
2023	154346553.95350486