Year current US$ 1992 4500000 1993 6860000.1335144 1994 102830001.831055 1995 28739999.7711182 1996 30100000.3814697 1997 21959999.084472697 1998 26190000.5340576 1999 21750000 2000 20120000.8392334 2001 12779999.7329712 2002 22370000.8392334 2003 24559999.4659424 2004 10609999.6566772 2005 26020000.4577637 2006 18670000.0762939 2007 9039999.96185303 2008 13010000.2288818 2009 12479999.5422363 2010 20760000.2288818 2011 24770000.4577637 2012 26190000.5340576 2013 17379999.1607666 2014 12109999.6566772 2015 27450000.762939498 2016 26420000.0762939 2017 24729999.5422363 2018 23729999.5422363 2019 19159999.8474121 2020 26260000.2288818 2021 26659999.8474121 2022 26870000.8392334