Year % of GDP 1985 5.325356545906171 1986 5.220326167247025 1987 5.373195053424415 1988 5.556723479201403 1989 5.686280206408128 1990 6.467250155733575 1991 7.758528829797175 1992 8.516542479921993 1993 8.491139654927277 1994 9.196731109681906 1995 11.820497457268397 1996 12.606807904948786 1997 12.90816653413181 1998 11.26514976387834 1999 13.842143268018653 2000 13.175451945291753 2001 13.092780333001402 2002 14.388061479923111 2003 15.611603564500392 2004 15.028051443874983 2005 17.23070852192916 2006 16.3236590797402 2007 16.93266921595045 2008 18.30094117898751 2009 20.358639411475576 2010 21.709838255292773 2011 21.708627427169265 2012 21.160556992688882 2013 25.940701084971508 2014 21.465593052213094 2015 18.858303915829374 2016 22.039807681734498 2017 19.699046767494853 2018 18.21163501612032 2019 19.19054473618427 2020 17.91029440907199 2021 16.14915969973113 2022 16.877921670254153 2023 16.29145259529538