Year	constant 2015 US$
1995	19521.315029856843
1996	20353.710430858948
1997	20275.68965430339
1998	20645.35918135087
1999	19891.95520330228
2000	20390.760580452665
2001	21278.576021343422
2002	22228.498431177326
2003	22267.13099848434
2004	22646.301272792705
2005	23406.95900846032
2006	24154.250967183638
2007	24211.775132591672
2008	24516.082262355598
2009	24125.523861443515
2010	24520.315544820627
2011	25091.145212541684
2012	24660.40580472231
2013	25004.18162534202
2014	24587.79070196584
2015	24449.818245332204
2016	24464.13916251871
2017	25646.169721410264
2018	27224.87305900736
2019	28175.163963707677
2020	27593.934168765987
2021	28224.459903297553
2022	29864.89667808204