Year	current US$
1990	4669.081500532924
1991	4576.009064275444
1992	5497.732540102186
1993	5860.8442996165695
1994	5926.057927368358
1995	5881.069762528099
1996	5742.12607796099
1997	6334.161444812815
1998	6581.382001665334
1999	6532.6416930988935
2000	6311.234132714906
2001	6587.352414220031
2002	6564.849617482973
2003	7058.837252553073
2004	9165.31889234305
2005	9907.91197162
2006	10718.147833945011
2007	9958.319726215128
2008	9006.170445118829
2009	8053.515313645353
2010	9049.847942625476
2011	9931.309033997164
2012	9920.339010180662
2013	12257.323412666288
2014	12397.873700560534
2015	12366.610170173732
2016	12565.307491281093
2017	13164.307749819183
2018	13828.277874425601
2019	14365.202120832164
2020	10722.816078326257
2021	12252.241925263557