Year Percent of GDP (Units) 1980 31.175 1981 38.356 1982 40.429 1983 39.898 1984 36.460 1985 45.361 1986 40.630 1987 30.460 1988 38.732 1989 33.388 1990 34.455 1991 33.354 1992 45.902 1993 43.600 1994 52.285 1995 45.894 1996 46.374 1997 42.241 1998 39.081 1999 42.970 2000 50.229 2001 64.470 2002 65.249 2003 67.669 2004 67.317 2005 64.263 2006 54.117 2007 45.126 2008 43.571 2009 47.352 2010 57.830 2011 67.157 2012 70.164 2013 67.735 2014 60.993 2015 57.336 2016 57.267 2017 55.646 2018 54.090 2019 49.879 2020 42.677 2021 41.885 2022 50.389 2023 66.053 2024 37.400 2025 33.415 2026 41.816 2027 42.698 2028 43.499 2029 43.455