Year current US$ 1991 6983236221.315314 1992 6369053252.190515 1993 4983223936.250057 1994 7059569070.895924 1995 10742152792.747503 1996 11796455475.290327 1997 12885504086.96006 1998 13221863446.045437 1999 11986503661.460587 2000 11509051694.80954 2001 13407820585.54038 2002 15926806955.468267 2003 17630119831.462902 2004 24013567728.653316 2005 26252462014.455173 2006 28675288749.465282 2007 34994924460.506096 2008 39741890952.06471 2009 32121480643.88112 2010 34278374403.385468 2011 37637641441.39663 2012 33840639703.840763 2013 38121030867.922844 2014 42180183575.6407 2015 39110375627.61226 2016 38523929336.82233 2017 42524160087.45299 2018 49870589106.071106 2019 50356044863.41429 2020 45876015974.19881 2021 56149291445.94516 2022 52276902362.92681 2023 64689081580.15233