Year	constant 2015 US$
1991	356.42531122154116
1992	359.0090294574957
1993	353.5046793030785
1994	346.43072163235894
1995	332.0506835376386
1996	348.3313278339835
1997	334.83317295492185
1998	417.4782263511888
1999	409.2382073640739
2000	364.2884555808271
2001	398.2775494243029
2002	416.1924663149198
2003	425.56786623873995
2004	383.0780621972512
2005	423.64005685540894
2006	451.12323286766133
2007	454.9629734252722
2008	509.3680414993529
2009	445.5553340938242
2010	495.71337090848135
2011	463.6149275083602
2012	552.2233968945171
2013	542.4562370941696
2014	581.1360697298397
2015	573.2814600675471
2016	649.0294686998662
2017	661.5662300959971
2018	691.8882004433455
2019	693.5916904681192
2020	726.8159224727409
2021	668.3221507750565
2022	863.0895105955518