Year	current US$
1990	4910778166.93894
1991	5175835065.42906
1992	5388785234.33153
1993	5565761788.03815
1994	5744571506.42174
1995	6365871348.98875
1996	6560316166.0953
1997	6879390867.97486
1998	7299091931.19256
1999	7686363760.78829
2000	8098430991.86236
2001	8472444538.60316
2002	8937145358.63023
2003	9712154723.53227
2004	10422294571.0329
2005	11024245140.5342
2006	11444025908.4961
2007	11830269468.6148
2008	11942257697.4565
2009	10965795344.0886
2010	11581904062.1595
2011	11832622937.9042
2012	11705640787.5461
2013	11199452974.6333
2014	11027172903.3911
2015	11748344102.2971
2016	11970757373.3458
2017	12317332877.0299
2018	12728391075.8441
2019	12936704428.7766
2020	11854618536.4843
2021	13148396364.5279