Year	current US$
1995	1434.0553812518308
1996	1568.9055814497142
1997	1791.471709653571
1998	2004.872183362654
1999	2121.729141030006
2000	2394.0428806590908
2001	2656.4140209079524
2002	3108.9623119523903
2003	3880.1330421723333
2004	4790.851243758004
2005	5847.934908887399
2006	7276.7128239530875
2007	10669.374966781179
2008	12648.563068246267
2009	10284.568900623486
2010	8646.37710830057
2011	9962.779892683722
2012	10297.666032066014
2013	11293.152100131269
2014	11936.758859539257
2015	10454.851661748638
2016	11023.21906023234
2017	12167.366132966234
2018	13751.56919159749
2019	13837.831744773024
2020	14147.461265097038
2021	16238.889757851937