Year	current US$
1995	6179000000
1996	6756000000
1997	7376000000
1998	7493000000
1999	7223000000
2000	8294000000
2001	8401000000
2002	8858000000
2003	9362000000
2004	10796000000
2005	11803000000
2006	12177000000
2007	12919000000
2008	13370000000
2009	11513000000
2010	11992000000
2011	11869000000
2012	12739000000
2013	13949000000
2014	16208000000
2015	17734000000
2016	19650000000
2017	21336000000
2018	22526000000
2019	24573000000
2020	10996000000