Year	current US$
1980	2717692307.692308
1981	2927857142.857143
1982	2903333333.3333335
1983	2566722222.2222223
1984	2662166666.6666665
1985	2843578947.368421
1986	3431823529.411765
1987	4741461538.461538
1988	3682000000
1989	3635722222.2222223
1990	3752272727.2727275
1991	2082903225.8064518
1992	2104896907.2164948
1993	2042473001.377111
1994	1666918819.188192
1995	2914844203.599768
1996	1702730354.3220773
1997	1374136308.2599878
1998	2757485693.251032
1999	2671841976.383523
2000	2620734007.6061745
2001	2747114488.526613
2002	3145800984.6050143
2003	4252375769.174388
2004	5064638701.194647
2005	5422226711.465931
2006	6239015511.775725
2007	7415092372.288313
2008	9343342430.019213
2009	8708450037.39269
2010	8376791161.119772
2011	9151313785.495693
2012	8572619063.2595415
2013	9540998845.657637
2014	9621413530.770277
2015	8175213864.306785
2016	8412413832.135379
2017	9243173337.954138
2018	10898880502.385122
2019	11511251788.678381
2020	13653405945.219881
2021	15926097841.204573
2022	16553666953.806396
2023	18470965596.031498