Year	current US$
1990	5369.109760566216
1991	4000.916774286249
1992	2321.152041230353
1993	2447.503191417612
1994	3237.9264631528467
1995	4930.335296687068
1996	5298.8850834338755
1997	5330.328900408921
1998	5711.485701319586
1999	5267.630521147358
2000	4952.309523515735
2001	5363.832904377705
2002	6219.643733744809
2003	8192.60925044031
2004	9723.364676079485
2005	10446.441961824155
2006	11505.410407078061
2007	13762.671286608087
2008	15900.46936492507
2009	14422.919861935165
2010	13697.45219707636
2011	14664.369079691483
2012	13452.97590277174
2013	14002.23810235423
2014	14035.859736938948
2015	12135.103618668334
2016	12634.319570171177
2017	13655.479821622854
2018	15132.955401239418
2019	15218.52580376215
2020	14383.869500030596
2021	17943.415126672993
2022	18673.177990503646
2023	21459.784780803642