Year	current US$
1995	1496013495.641238
1996	1650462515.1610944
1997	1913138584.855449
1998	1941322712.5050576
1999	1925539601.0212765
2000	1437390510.1300511
2001	1457262268.334614
2002	1531229368.318265
2003	1875673177.1973555
2004	2197816457.6352277
2005	2519959737.546678
2006	2937597856.0231442
2007	3460212423.781118
2008	3862198345.7277827
2009	3714288562.547914
2010	3859552492.017581
2011	4678268674.982566
2012	4575874395.832514
2013	4735981813.930988
2014	5767700000.047684
2015	5494700000.047684
2016	6324800000.01192
2017	8405447628.543336
2018	8725019225.347815
2019	8922376844.29394