Year Percent of GDP (Units) 1993 19.445 1994 14.238 1995 20.407 1996 19.954 1997 20.713 1998 20.008 1999 22.117 2000 22.635 2001 20.896 2002 20.484 2003 22.191 2004 23.355 2005 29.602 2006 28.188 2007 27.270 2008 29.327 2009 24.805 2010 26.186 2011 28.984 2012 32.259 2013 28.775 2014 28.202 2015 25.784 2016 23.099 2017 26.290 2018 28.117 2019 27.216 2020 27.164 2021 27.914 2022 25.431 2023 24.173 2024 23.075 2025 22.694 2026 22.653 2027 23.081 2028 23.779 2029 24.236