Year U.S. dollars (Billions) 1992 1.694 1993 2.728 1994 4.533 1995 5.411 1996 5.975 1997 6.529 1998 7.169 1999 7.535 2000 7.963 2001 8.363 2002 9.564 2003 11.777 2004 14.440 2005 17.030 2006 21.589 2007 31.100 2008 36.023 2009 26.480 2010 23.998 2011 27.740 2012 28.191 2013 30.210 2014 31.395 2015 27.266 2016 28.076 2017 30.473 2018 34.445 2019 34.229 2020 34.363 2021 39.469 2022 40.454 2023 43.598 2024 45.466 2025 48.274 2026 50.747 2027 53.319 2028 56.024 2029 58.828