Year Percent of GDP (Units) 1992 24.860 1993 24.796 1994 24.661 1995 24.287 1996 23.757 1997 24.735 1998 33.113 1999 25.765 2000 22.844 2001 22.488 2002 24.439 2003 23.279 2004 23.713 2005 22.856 2006 24.639 2007 23.805 2008 24.184 2009 23.328 2010 24.253 2011 25.784 2012 25.334 2013 25.830 2014 26.705 2015 26.701 2016 26.383 2017 26.019 2018 28.102 2019 26.779 2020 23.550 2021 20.689 2022 21.362 2023 23.004 2024 27.391 2025 27.367 2026 27.104 2027 26.944 2028 26.833 2029 26.778