Year	current US$
1995	298.58243520583216
1996	293.2017827340956
1997	284.80688502472583
1998	249.67406223893116
1999	272.85125216177386
2000	275.9906559001731
2001	293.80290139046144
2002	306.71596778523167
2003	328.70668925482596
2004	368.00353581560177
2005	425.60476405986964
2006	482.4095484025573
2007	566.2409997894244
2008	664.4094928737875
2009	648.5348743622383
2010	694.4357583965706
2011	776.7400557251549
2012	832.7312062730479
2013	882.1398837785705
2014	944.8351920796365
2015	1006.8996658824053
2016	1100.722298720235
2017	1199.9352892322818
2018	1305.944544638451
2019	1413.8263934238482
2020	1357.81296884756
2021	1374.9348856050653