Year Percent of GDP (Units) 1990 19.628 1991 16.840 1992 17.976 1993 16.477 1994 17.864 1995 21.410 1996 24.810 1997 20.787 1998 23.956 1999 14.696 2000 16.604 2001 25.327 2002 18.903 2003 19.063 2004 19.610 2005 18.815 2006 22.801 2007 27.596 2008 22.893 2009 26.049 2010 20.873 2011 23.368 2012 24.684 2013 23.538 2014 22.507 2015 21.590 2016 17.723 2017 20.120 2018 20.903 2019 20.277 2020 18.249 2021 26.361 2022 26.848 2023 24.886 2024 24.766 2025 25.143 2026 25.143 2027 25.143 2028 25.143 2029 25.143