Year	current US$
2000	1405370400
2001	1442922572
2002	1356507247
2003	1401579826
2004	2645153350
2005	2905343229
2006	3656868052
2007	4352755517
2008	5097562815
2009	6098975288
2010	5923928116
2011	5990927915
2012	5482223622
2013	6473340459
2014	6177645144
2015	4881310930
2016	5032326376
2017	5181543733
2018	4899056106
2019	6337943369
2020	5647818653