Year	constant 2015 US$
1989	8174937156.0386505
1990	8118065089.858954
1991	7110772411.551671
1992	7319986045.640094
1993	7545922057.426849
1994	7614158949.092704
1995	8021269124.206183
1996	8323893843.090991
1997	7047300409.503072
1998	7293962326.800785
1999	8064682311.200668
2000	8190574455.891754
2001	8591794100.12242
2002	8749504056.030422
2003	8539979336.345024
2004	8776002480.85194
2005	8989664501.067091
2006	8867515628.283878
2007	9385170730.280476
2008	8965530247.976858
2009	8565000153.834485
2010	8615337310.279825
2011	8605486594.732792
2012	8639176041.903646
2013	8557218088.552331
2014	8770387572.990131
2015	9092900000
2016	9015374868.644848
2017	9113487995.4933
2018	9463779440.345802
2019	9559823916.929377
2020	7946769246.102679
2021	8888399145.24359
2022	9819882807.371056
2023	10012956832.092909