Year % of GDP 1992 38.5942200369287 1993 54.84958853503185 1994 55.917583400053374 1995 12.315270981347828 1996 11.260336390251043 1997 13.77846949308172 1998 10.72909185944312 1999 11.740901202216047 2000 16.290823511519466 2001 12.9316251296911 2002 12.979950980604634 2003 14.28476044137746 2004 17.653558658249747 2005 14.683352649503695 2006 18.323536326882248 2007 20.79392324179757 2008 21.162979314675663 2009 23.788837245565496 2010 24.79097927766396 2011 26.69478097845705 2012 30.64334673467449 2013 33.154297016878076 2014 36.544870094773955 2015 39.20354901268849 2016 34.57199638880798 2017 32.375295290754046 2018 30.040944382609997 2019 35.24743049351496 2020 40.21296723433102 2021 37.17323169860048 2022 31.96541533813232 2023 36.6434463788042