Year % of GDP 1991 18.410916686546518 1993 12.582462649504473 1994 13.201490944389413 1995 19.824546890876793 1996 18.90896741466947 1997 21.646091447723958 1998 22.186709547089105 1999 22.213817150751577 2000 20.300373277696945 2001 19.404629211764902 2002 19.20183971046981 2003 19.063854429754816 2004 19.362009265920253 2005 19.754629223377034 2006 20.484203180346505 2007 20.36935435219044 2008 20.48203391621946 2009 17.040128802396843 2010 15.964973466168539 2011 15.482376950559514 2012 15.529960150149522 2013 15.601214639198613 2014 15.836337850220842 2015 16.694862685388824 2016 16.93159775161969 2017 16.6506470517037 2018 16.78390655469886 2019 19.973851675559793 2020 19.9876338324741 2021 21.27890724099517 2022 21.103640004527517