Year Percent of GDP 1990 33.738 1991 29.748 1992 30.648 1993 27.829 1994 27.247 1995 26.135 1996 23.642 1997 32.305 1998 26.789 1999 28.219 2000 23.095 2001 27.668 2002 31.88 2003 29.284 2004 26.055 2005 24.923 2006 24.115 2007 23.351 2008 23.647 2009 25.638 2010 28.547 2011 27.754 2012 31.916 2013 34.327 2014 28.411 2015 36.562 2016 35.101 2017 32.413 2018 33.377 2019 29.708 2020 29.066 2021 28.299 2022 27.198 2023 26.998 2024 25.92