Year % of GDP 1981 10.987691436266706 1982 10.821128150531708 1983 11.39694414449037 1984 12.45159387563188 1985 11.49401552671278 1986 11.778416599815394 1987 11.857012551682976 1988 12.853539776130443 1989 14.22411071345222 1990 14.86034052977352 1991 16.48103059611783 1992 17.313295833593855 1993 17.915683819799135 1994 17.954266240444536 1995 18.240744098472888 1996 17.64710672967149 1997 18.1037498622404 1998 17.40729405246819 1999 20.20181648233439 2000 21.05577101803974 2001 20.973471009681024 2002 21.46881780216564 2003 21.996277119582967 2004 24.120035068895103 2005 25.737750909245023 2006 26.612058262613115 2007 26.455800532749585 2008 28.582415126364346 2009 24.619797104845027 2010 25.548319582922474 2011 27.241672880505803 2012 26.507326312381963 2013 26.29616051181758 2014 24.753001635712575 2015 22.64637970486831 2016 22.088792229289652 2017 23.39909760167302 2018 24.760813155644797 2019 24.099144018619022 2020 22.819063623559295 2021 25.146362041510393 2022 27.654983383392427 2023 27.47040376817672