Year	current US$
1990	242351.979812414
1991	256185.070182348
1992	267918.822399459
1993	420660.705013843
1994	439310.574301288
1995	458614.236755349
1996	477519.070685088
1997	496683.014149128
1998	513574.496178851
1999	532530.225222625
2000	556848.337739791
2001	582205.227473475
2002	806110.459266144
2003	840515.296403616
2004	1103121.81001224
2005	1628637.24329778
2006	1716665.22550736
2007	1545194.85337779
2008	1610264.34478108
2009	1657048.58203941
2010	1428912.15099974
2011	1491419.37550743
2012	1864202.87074791
2013	1939523.11964277
2014	2020245.37225916
2015	2086369.09058223
2016	2513808.81054662
2017	3367538.48768608
2018	3526087.24799623
2019	3670103.01568531
2020	3953915.29844745
2021	4484153.44014125