Year current US$ 1990 559999.9949336045 1991 519999.99582767556 1992 560000.0135600566 1993 1060000.0023841863 1994 1369999.9563395963 1995 1720000.0360608096 1996 4609999.984502792 1997 5309999.976307156 1998 9479999.98927116 1999 6579999.975860115 2000 9920000.21412969 2001 12270000.033080585 2002 11820000.043138862 2003 20350000.360980604 2004 20460000.02138322 2005 22530000.492930368 2006 22370000.55611132 2007 30060000.26315452 2008 38900000.81062324 2009 26379999.808967136 2010 29280000.681057587 2011 31420001.117512576 2012 33900001.07884408 2013 37650000.22202724 2014 36550000.397488445 2015 34570000.15303489 2016 27540000.237524495 2017 33740000.21070238 2018 43049999.739974774 2019 37739999.96483325 2020 35490000.203251794 2021 29540000.636130564 2022 34440000.00506645