Year current US$ 1990 157165258.90835 1991 189064581.794573 1992 172271802.802852 1993 166160978.480468 1994 151122837.559643 1995 157151811.794833 1996 138321357.475114 1997 141057976.018352 1998 146368731.410973 1999 152836174.638893 2000 167054501.321937 2001 174079363.014569 2002 193466522.235857 2003 195629948.427968 2004 210916896.189201 2005 257324693.108401 2006 304585459.157128 2007 335307302.466584 2008 348085490.810275 2009 376702395.551957 2010 408954663.514135 2011 469200514.888651 2012 532540613.016544 2013 594140568.468768 2014 610114144.317003 2015 601569741.367785 2016 652512944.070805 2017 732626674.576595 2018 844301938.718539 2019 940769689.859766 2020 907128151.114488 2021 960771244.223429