Year	current US$
1990	40858020.1264977
1991	43100865.0282855
1992	33069311.3885705
1993	33702316.6942151
1994	38097338.7958885
1995	50591334.1594192
1996	53833260.9682281
1997	49888891.8897154
1998	53643193.0747435
1999	54071087.5871102
2000	49684818.9021559
2001	52096212.6601433
2002	60079688.1525163
2003	78909918.8392116
2004	92630279.3589511
2005	103283816.078563
2006	106078741.762368
2007	121598193.494131
2008	145404991.447737
2009	133360670.752762
2010	123955013.000477
2011	133736292.047307
2012	122282116.555037
2013	120137094.205321
2014	119083473.83144
2015	104058746.472196
2016	97381988.2607527
2017	104950869.678128
2018	120415485.256375
2019	127133867.220614
2020	136068674.849604
2021	147066120.402361