Year Percent of GDP (Units) 1992 44.303 1993 45.929 1994 48.765 1995 49.094 1996 50.321 1997 54.395 1998 37.919 1999 34.721 2000 35.921 2001 41.934 2002 44.538 2003 46.444 2004 45.894 2005 45.318 2006 50.325 2007 46.437 2008 47.932 2009 51.501 2010 53.355 2011 50.977 2012 48.625 2013 47.399 2014 46.207 2015 44.275 2016 44.556 2017 43.427 2018 45.767 2019 48.954 2020 63.625 2021 83.252 2022 91.046 2023 82.727 2024 81.113 2025 80.639 2026 80.224 2027 79.813 2028 79.529 2029 79.080