Year Percent of GDP 1994 24.143 1995 25.729 1996 25.251 1997 27.871 1998 26.685 1999 26.908 2000 27.877 2001 28.065 2002 27.655 2003 28.492 2004 27.108 2005 27.578 2006 25.817 2007 26.284 2008 27.602 2009 25.924 2010 24.977 2011 27.448 2012 26.555 2013 24.929 2014 25.59 2015 25.854 2016 28.23 2017 28.482 2018 29.603 2019 31.102 2020 31.069 2021 30.269 2022 30.269 2023 30.269 2024 30.269