Year Percent of GDP (Units) 1984 151.310 1985 143.752 1986 137.391 1987 129.398 1988 120.282 1989 113.936 1990 108.368 1991 104.075 1992 101.177 1993 95.918 1994 87.962 1995 77.864 1996 75.525 1997 71.054 1998 69.536 1999 64.624 2000 60.818 2001 53.046 2002 48.239 2003 44.498 2004 42.446 2005 39.865 2006 38.479 2007 35.616 2008 33.217 2009 31.730 2010 30.459 2011 27.668 2012 25.073 2013 10.277 2014 11.823 2015 14.274 2016 16.162 2017 18.934 2018 17.022 2019 21.229 2020 24.315 2021 26.276 2022 28.073 2023 33.232 2024 35.538 2025 36.257 2026 36.499 2027 35.833 2028 35.441 2029 34.786