Year % of GDP 1993 56.41219288801761 1994 43.11168831168831 1995 21.97340601533276 1996 25.23047744257596 1997 25.91752145270184 1998 16.83708048700808 1999 19.836977534376178 2000 16.95462625580142 2001 16.304334906277116 2002 16.669438203116236 2003 17.556402450371053 2004 20.86820567977036 2005 22.987417611453505 2006 27.688149563970853 2007 34.58240924242871 2008 41.76384101810118 2009 43.87488321342186 2010 44.55081909147671 2011 45.43156002682201 2012 47.621626807287505 2013 47.14524894571252 2014 49.25071649301425 2015 50.94497333019676 2016 47.88616829911583 2017 48.521525180348355 2018 48.71778067411595 2019 49.4511288119118 2020 53.676857945025844 2021 53.20283188665711 2022 52.796242422986374 2023 53.13876749404016