Year	current US$
1995	641187660.8456273
1996	717121528.2535311
1997	649557464.5307021
1998	604407510.2174706
1999	638650244.0925255
2000	693549039.5392398
2001	733935064.7889352
2002	799470877.0824318
2003	934423251.5672692
2004	1095529760.010375
2005	1254081716.5192297
2006	1583722258.6555235
2007	1906558258.3393667
2008	2097093577.0772665
2009	1964964409.339796
2010	2597651759.011032
2011	3135765873.0551815
2012	3703547555.7743483
2013	3973927113.9092093
2014	4149918148.2134786
2015	4121968391.0093102
2016	4257872449.9001474
2017	4595832373.978096
2018	5543501252.347439
2019	5836421997.17615