Year	constant 2015 US$
1975	614966891.0886577
1976	686014231.8568507
1977	747497589.094835
1978	882905336.3428444
1979	1041103103.2671992
1980	1036433400.6196526
1981	1105225167.0375543
1982	1143606222.135241
1983	1204087207.4293013
1984	1304548654.4166846
1985	1703864537.5640955
1986	1962358407.521258
1987	2227777349.3671126
1988	2645786329.5866394
1989	2774252464.6909885
1990	3189931892.7030816
1991	3499850819.9024577
1992	3623552523.2575593
1993	3963084676.0701213
1994	3499145221.4660726
1995	3916165815.271501
1996	4420092074.465802
1997	4972177804.285935
1998	4842592328.812076
1999	5370993323.359019
2000	5269665121.618256
2001	5414524792.977958
2002	4807359365.101973
2003	4497207587.165975
2004	4619115989.369665
2005	5579404106.448457
2006	6155814940.376061
2007	6815684678.595001
2008	7613561248.978399
2009	7129318215.722339
2010	7927669261.232773
2011	9496430619.148373
2012	9590454050.929422
2013	10195909930.48654
2014	11134796491.020933
2015	10484405172.8608
2016	11072023937.208595
2017	10927855158.84179
2018	10680679727.518808
2019	11572664850.646587
2020	11590846403.795883
2021	11966577269.826405