Year	constant 2015 US$
1995	16055.027179248884
1996	16602.814991914285
1997	17045.517633791093
1998	18993.457942028064
1999	16348.106741181935
2000	17060.512231971185
2001	16259.97406398425
2002	16116.778864498507
2003	17978.14608419393
2004	21433.655392068988
2005	16865.56230973736
2006	14359.326655612573
2007	15772.82034928057
2008	17309.356978836466
2009	15038.537156446553
2010	18129.575401900194
2011	21658.22273073566
2012	17557.54348776882
2013	17393.383506649374
2014	22792.497593919437
2015	23805.85491681436
2016	25435.589528808137
2017	28343.51478455597
2018	25115.043120791113
2019	33376.2267173681
2020	33890.72292867602
2021	33521.469409139325
2022	37485.20335921533