Year	current US$
1995	2167.7925821145423
1996	2327.4348569549907
1997	2830.278070891312
1998	3166.666532645085
1999	3113.179060198587
2000	3293.2299786708563
2001	3525.7936318546144
2002	4141.592701801019
2003	5499.428989113867
2004	6700.327191893822
2005	7854.765278678553
2006	9230.707981025209
2007	12285.44705370142
2008	14944.996652175008
2009	11820.776159135927
2010	11987.508411647046
2011	14376.94786439316
2012	14367.70942487197
2013	15729.652466651236
2014	16551.018202077976
2015	14263.964577349474
2016	15008.313244552579
2017	16885.407394837326
2018	19186.359591640987
2019	19615.549145017467
2020	20381.855782747818
2021	23849.6156993566
2022	25078.745365566887
2023	27102.781528297135