Year	current US$
1998	5945677376.614773
1999	6262740656.851643
2000	6439703434.710243
2001	6232906290.485102
2002	6663669064.748201
2003	7332244897.959183
2004	8553643354.082753
2005	8827272727.272726
2006	9676172953.081877
2007	11514605842.336935
2016	9072059721.021658
2017	9070980826.69076
2018	9940766574.08511
2019	9921386549.998047
2020	9301349237.210602
2021	11138490591.65705
2022	11228317318.765242