Year Percent of GDP 1995 21.447 1996 21.259 1997 20.448 1998 20.496 1999 21.688 2000 22.809 2001 24.384 2002 25.711 2003 26.574 2004 26.168 2005 26.098 2006 25.382 2007 29.036 2008 27 2009 34.346 2010 33.742 2011 33.638 2012 34.269 2013 36.997 2014 39.92 2015 41.066 2016 44.177 2017 46.787 2018 50.463 2019 55.362 2020 59.512 2021 63.228 2022 66.678 2023 69.658 2024 72.421