Year	current international $
1997	44780.55423694692
1998	47913.901817970735
1999	52172.39642459929
2000	53665.387984854184
2001	56849.66116078573
2002	56599.77781663926
2003	58627.82438997082
2004	61878.53460606433
2005	64447.068253651625
2006	67940.60432094305
2007	73725.91883629661
2008	73971.1201946819
2009	65974.25385260134
2010	62024.57257957186
2011	56456.300091870056
2012	51795.747852624154
2013	50398.18857162232
2014	51746.10373789787
2015	51199.7734857581
2016	51884.116506999715
2017	52107.5631120892
2018	55044.483874799735
2019	58259.275244550394
2020	56445.226818801275
2021	65717.89154544579