Year	current US$
1995	2155569687.510378
1996	2190938684.7134757
1997	2160936104.8298254
1998	2413358595.8264256
1999	2109053071.4786093
2000	2095236798.861992
2001	2376306203.4857454
2002	2275537380.218667
2003	2243728069.212358
2004	2263140339.134315
2005	2769495064.2868285
2006	2888968086.538893
2007	3224925634.7216473
2008	4000954570.7915273
2009	4567764921.292882
2010	4383367634.177816
2011	4952757288.338729
2012	3923441056.392034
2013	4523655280.1696825
2014	4363455913.692992
2015	4303909780.884186
2016	4666093458.43061
2017	5129982508.424293
2018	5219321436.298019
2019	5387281154.753343
2020	5440464258.211968
2021	6160362000.476936