Year Percent of GDP (Units) 1990 33.328 1991 37.701 1992 36.093 1993 34.729 1994 30.650 1995 31.325 1996 27.277 1997 25.223 1998 25.903 1999 28.023 2000 29.045 2001 29.649 2002 29.576 2003 26.375 2004 24.065 2005 38.784 2006 35.046 2007 34.812 2008 35.569 2009 36.990 2010 33.193 2011 31.260 2012 29.767 2013 26.991 2014 29.084 2015 33.954 2016 37.602 2017 30.754 2018 32.508 2019 33.604 2020 49.899 2021 39.479 2022 41.510 2023 45.723 2024 42.153 2025 38.645 2026 36.143 2027 34.631 2028 33.914 2029 33.333