Year % of GDP 1990 8.69128210429419 1991 7.06674724228411 1992 8.567803475642268 1993 12.38367959877734 1994 14.195373482144166 1995 16.578538873936335 1996 13.729298890654404 1997 11.168249607914733 1998 10.105463917619495 1999 10.166846991600062 2000 10.812805197321916 2001 13.837039970742032 2002 14.281641627355658 2003 15.093122761329283 2004 16.045583308834075 2005 16.98336705645137 2006 18.414991447908903 2007 19.830625586965457 2008 19.464611355085715 2009 18.194265831426502 2010 19.607528736686923 2011 21.634282326673933 2012 22.372111684506983 2013 19.012787601366565 2014 18.069209276081338 2015 17.104911553096525 2016 16.349975063903965 2017 15.66349156580429 2018 14.739143393171123 2019 16.036746148498576 2020 13.5038738462361 2021 14.12002232658151 2022 15.413710520168285 2023 17.804729141079836