Year	constant 2015 US$
1995	24823.83289097171
1996	25044.387967604038
1997	25055.656255964106
1998	24904.55115846686
1999	24523.291058255625
2000	23945.481692226545
2001	22501.815818206018
2002	24120.058929294053
2003	28606.45369532673
2004	28060.84041277522
2005	22584.491542640233
2006	26921.294490469147
2007	27578.896021658216
2008	28584.154853037526
2009	25892.76802039703
2010	25525.24260557605
2011	25210.89420853109
2012	24114.654374181304
2013	24603.62968250465
2014	24771.031344587685
2015	24214.947731386095
2016	24441.103675769344
2017	23953.62781487132
2018	24107.03042780297
2019	24840.20931460736
2020	17974.08543907058
2021	24542.61162909095
2022	26709.3851944031