Year Percent of GDP (Units) 1994 22.198 1995 16.861 1996 13.223 1997 13.471 1998 18.188 1999 17.538 2000 21.855 2001 25.654 2002 22.451 2003 25.351 2004 24.550 2005 28.084 2006 27.452 2007 28.839 2008 28.295 2009 22.142 2010 23.943 2011 27.045 2012 26.343 2013 24.754 2014 23.742 2015 16.611 2016 17.008 2017 19.822 2018 21.426 2019 19.679 2020 17.509 2021 17.104 2022 21.823 2023 21.905 2024 20.073 2025 19.990 2026 19.690 2027 19.506 2028 19.274 2029 19.333