Year % of GDP 1993 18.54379047616532 1994 18.84713889602541 1995 19.763456561913486 1996 20.48661449249228 1997 19.19353455076235 1998 19.038360494237672 1999 17.67478775556745 2000 21.246575556367013 2001 21.834648800598913 2002 23.96091516627157 2003 24.015310460592794 2004 23.096353971487396 2005 25.354764084500292 2006 29.497440688210073 2007 30.85887435677176 2008 31.21995699756698 2009 25.155666068863106 2010 26.71859428739641 2011 27.75218082693292 2012 28.712297651167695 2013 27.865889126229135 2014 25.817742477391107 2015 24.746681978488322 2016 24.232800485523143 2017 25.026901509308537 2018 25.15985026836723 2019 26.372941562485877 2020 21.933866393353 2021 23.68548571871773 2022 22.875457368658708