Year	current US$
1995	4642722212.408509
1996	5274960215.5594845
1997	5720539508.550496
1998	5900398710.943803
1999	5977031389.392268
2000	5246480633.029641
2001	5618000939.53777
2002	6189888180.618201
2003	9709381543.94458
2004	11481035927.512562
2005	13356525474.208855
2006	14647290125.013872
2007	16906365907.07214
2008	16338877283.024641
2009	15779204434.475012
2010	17775261534.82532
2011	19441646456.73214
2012	21369379889.958504
2013	20888412929.617676
2014	22067679662.639038
2015	20375126010.421276
2016	19872248426.705338
2017	21570036020.688145
2018	23088813542.401543
2019	22349177802.461456