Year	current US$
1995	3563707929.51215
1996	3855149310.66103
1997	4358383740.3024
1998	4831780054.47548
1999	5071955320.50769
2000	5668016222.10443
2001	6208491157.24544
2002	7182240791.08999
2003	8877569794.5034
2004	10842280848.4761
2005	13092350826.0822
2006	16142346830.0061
2007	23476092473.7828
2008	27539994636.8801
2009	22026142392.8294
2010	18136251535.4014
2011	20520427409.9797
2012	20948737664.6865
2013	22729128694.8729
2014	23799294952.4899
2015	20674751442.1028
2016	21600405607.6305
2017	23632042537.0214
2018	26501666605.2477
2019	26483146825.445
2020	26886528613.7924
2021	30602025359.7744