Year	current US$
1975	483433337.05232626
1976	530023629.2032717
1977	659332215.1062316
1978	842976049.9053135
1979	1043986227.5449102
1980	1734953067.9933665
1981	1672380055.7880056
1982	1748841060.4192355
1983	1782153058.9543936
1984	1771971385.8424728
1985	1892743378.1190019
1986	2326593898.305085
1987	2820961388.550548
1988	3307226599.7490587
1989	3445511005.91716
1990	4392484250.960307
1991	4856570328.282828
1992	5701426988.265971
1993	5031418727.9151945
1994	5560480714.285714
1995	7377742561.4489
1996	7626420326.223337
1997	7380881413.91106
1998	8038425339.366516
1999	8126902912.621359
2000	7688108388.312913
2001	8062167577.413479
2002	8949991346.153847
2003	11463959229.898075
2004	13519285000
2005	14393656261.658997
2006	15723089951.072638
2007	19265120448.94607
2008	23335680386.699867
2009	21482496048.28152
2010	21741607504.672375
2011	23449714754.244907
2012	21448026972.417576
2013	20471260833.362724
2014	19838850280.22125
2015	16645887646.379402
2016	16982744025.685457
2017	18287853891.792145
2018	20300125013.328976
2019	20538963007.438473
2020	20281987728.297546
2021	22584828352.380196
2022	22912268071.09736
2023	25484571657.193012