Year current US$ 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 0 1997 0 1998 0 2005 55214462.63764576 2006 -64459051.720428444 2007 -79926254.01968174 2008 -128035554.73773982 2009 -2136938322.8611248 2010 -695869023.6387583 2011 -1305209110.572558 2012 -1211523496.9426627 2013 30269308.324073557 2014 28777294.303661272 2015 22479257.5061666 2016 16660321.384231232 2017 9170650.302437713 2018 -23397394.677418213 2019 -56965988.451218955 2021 23196191.9870348 2022 32533361.753679566 2023 -260481.17302255842