Year	current US$
1990	1324574745.66475
1991	1459742529.89902
1992	1504766066.00656
1993	1543965007.63581
1994	1682559499.57393
1995	1751447770.16868
1996	1901321766.44446
1997	1930937998.00709
1998	2044197686.29055
1999	2050418877.18218
2000	2176720152.22484
2001	2296605553.9737
2002	2233933629.42293
2003	2426987972.61285
2004	2515558864.00503
2005	2573479510.11789
2006	2664509693.95303
2007	2693532127.80698
2008	2869759512.12503
2009	2752633880.48819
2010	3049870084.53279
2011	2877842884.22785
2012	2960043420.13127
2013	3122308920.18152
2014	3035082011.54571
2015	3307938171.54991
2016	3383586688.42756
2017	3469312892.01987
2018	3669481460.41284
2019	3792847508.49775
2020	3629737361.53607
2021	4018152979.10146