Year Percent of GDP (Units) 1995 26.332 1996 27.458 1997 24.989 1998 21.574 1999 22.798 2000 21.606 2001 22.508 2002 24.660 2003 25.136 2004 29.245 2005 24.477 2006 24.827 2007 22.620 2008 25.359 2009 26.888 2010 30.443 2011 27.199 2012 30.761 2013 29.454 2014 29.834 2015 25.373 2016 25.119 2017 24.558 2018 24.863 2019 23.688 2020 40.237 2021 28.859 2022 21.679 2023 21.981 2024 22.036 2025 21.880 2026 21.903 2027 21.841 2028 21.799 2029 21.757