Year	current US$
1974	185484066.22109455
1975	201998903.55501202
1976	131938828.94980738
1977	129949987.70189391
1978	82672793.83472037
1979	108067938.40403429
1980	409114854.79224813
1981	191225223.55364624
1982	235511267.39173606
1983	363455668.34670264
1989	725545030.4523811
1990	775158300.5661138
1991	835865821.539174
1992	976078705.0934733
1993	1060780756.9172003
1994	1104459476.0920858
1995	1266425610.7240498
1996	1290033410.3760102
1997	1307914973.4039328
1998	1209965093.2539515
1999	1316257580.5757904
2000	1549193283.1505086
2001	1646618813.287545
2002	1587631102.1854272
2003	1578220255.8514233
2004	1736047917.7957056
2005	1754610528.617872
2006	2071767657.9188676
2007	2770482687.9667068
2008	2467175710.4138045
2009	2499365791.5162497
2010	3036283588.887202
2011	3469238333.652645
2012	3512416701.1452765
2013	3648596589.101686
2014	3662078545.270868
2015	3240547788.184108
2016	2989512121.139728
2017	3211205011.8365602
2018	3275286210.6620193
2019	3372749903.0580864
2020	3053193259.7087927
2021	3146847873.2437024
2022	3357032131.5545964
2023	3451980969.1157637