Year	current US$
1998	175202272.33603
1999	167069717.541443
2000	225384932.677877
2001	308510999.738257
2002	298887656.533509
2003	317206835.767579
2004	320620656.09914
2005	348086664.354964
2006	376550918.428137
2007	387625008.907917
2008	393106655.333527
2009	413326243.774106
2010	482936786.176408
2011	554344973.678522
2012	607118505.223147
2013	656398055.161943
2014	711498699.134628
2015	758670560.600778
2016	816526002.584576
2017	875473343.789958
2018	933973045.814541
2019	997216059.343349
2020	908545967.361154
2021	905015570.978272
2022	901370910.144519