Year	current US$
2000	5129018107.331769
2001	5969603114.574607
2002	6439675219.860758
2003	6157387775.445825
2004	6643941790.383122
2005	8769925573.324718
2006	9589500620.084341
2007	12465900754.227829
2008	16074418594.476982
2009	12143617775.979305
2010	15630821163.922731
2011	17015734205.9763
2012	17371233044.354073
2013	19092014391.64419
2014	20297160498.087006
2015	19977167360.662785
2016	20408122828.020588
2017	21468588154.532776
2018	23786447439.43842
2019	25284302374.26295