Year	current US$
1989	2078032679.46588
1990	2312314077.9199
1991	2787296316.25905
1992	3070911028.11678
1993	2999861951.25978
1994	3027410348.20274
1995	3501230072.62263
1996	3681615635.82537
1997	3740379445.31769
1998	3148525092.03787
1999	3407389216.25368
2000	3991381438.99703
2001	3990020985.04039
2002	4238851525.30939
2003	4626136510.80623
2004	5472372382.5855
2005	6348883576.8866
2006	7331751445.78598
2007	8202721468.01604
2008	9927111323.27979
2009	8089972001.06122
2010	9771621478.88305
2011	12388260130.1839
2012	13413612462.9095
2013	13573483330.9313
2014	12953209542.3624
2015	10647352234.2435
2016	9959128433.15925
2017	10312062222.0544
2018	10319927817.8464
2019	10609129744.3203
2020	9913318193.89109
2021	10270331724.067