Year US Dollars 1991 670000.01669 1992 15199999.80927 1993 91610000.61035 1994 152720001.2207 1995 101529998.7793 1996 169399993.89648 1997 122480003.35693 1998 108400001.52588 1999 150039993.28613 2000 137250000 2001 190100006.10352 2002 153330001.83105 2003 152070007.32422 2004 112400001.52588 2005 133740005.49316 2006 132839996.33789 2007 135309997.55859 2008 106819999.69482 2009 141009994.50684 2010 69319999.69482 2011 139199996.94824 2012 156919998.16895 2013 154889999.38965 2014 126559997.55859 2015 88769996.64307 2016 54240001.67847 2017 102169998.16894 2018 101199996.94824 2019 94080001.83105 2020 171630004.88281 2021 125290000.91553