Year	current international $
1990	9521.391158570208
1991	7913.895836640599
1992	7322.9327089499875
1993	6857.93513451198
1994	7333.364402247965
1995	8048.490640364891
1996	8801.123675503779
1997	9532.386957928578
1998	9887.021370640783
1999	9940.01634336906
2000	10669.378422767026
2001	11652.11046012358
2002	13022.61514088507
2003	13697.357303314264
2004	14694.555403117794
2005	15454.980857974324
2006	17638.838961572557
2007	19577.64048075365
2008	21033.880087863698
2009	20274.654773787202
2010	20093.223477542393
2011	21150.375158758787
2012	21529.920415346605
2013	22218.14960162943
2014	22463.182449792184
2015	23460.566530753727
2016	25427.62718433495
2017	27391.10878448817
2018	29156.34322648162
2019	32329.560497983963
2020	30688.808453410704
2021	37232.59577198805
2022	42399.122264753045
2023	45909.634484175825