Year	current US$
1993	78525115.97
1994	48492443.08
1995	25742912.2191399
1996	20787354.4322244
1997	29128895.3295662
1998	23214363.2611077
1999	19242010.4835428
2000	17795790.1522529
2001	22498262.7839627
2002	24388759.2848345
2003	425324010.786375
2004	702778958.346357
2005	1210904294.51836
2006	1343434296.87459
2007	1661512193.07653
2008	2050364971.52283
2009	1672288994.85459
2010	1590890346.32034
2011	1753891235.79544
2012	1927193403.7686
2013	2071687508.93075
2014	2395643258.39782
2015	2138338117.25123
2016	2119834516.06117
2017	2164333033.86263
2018	2210599186.1914
2019	2544685949.43086
2020	2463633269.32617
2021	2428848211.80851
2022	2316199137.46684
2023	2239157262.93484