Year % of GDP 1975 15.089983714347438 1976 10.283876017758576 1977 11.367689467064789 1978 15.367329877074495 1979 13.126839962361217 1980 15.317919937192412 1981 13.976993623840354 1982 15.52660478041627 1983 16.095951658355297 1984 17.33124767498244 1985 23.058150943441287 1986 20.238063038140194 1987 19.59221612717164 1988 17.58391769367263 1989 15.914788636920823 1990 17.114717881733277 1991 14.888815895866362 1992 17.907096366059264 1993 15.458031746999767 1994 18.542183123231112 1995 19.291471185392687 1996 16.70482400650023 1997 15.694712554950774 1998 14.572421766628146 1999 13.571208363261627 2000 14.684988852410068 2001 16.560528756563084 2002 14.448038398288828 2003 15.089193703233953 2004 14.234312719923162 2005 13.839173914914435 2006 14.347654844269965 2007 14.182774865039303 2008 15.128096249239745 2009 11.631694436359599 2010 13.21588317968973 2011 11.860245284247888 2012 11.32566588417368 2013 19.533584591873346 2014 18.347280406020943 2015 18.53086132824405 2016 19.323376740849618 2017 16.365211974353688 2018 15.898193007367862 2019 17.432279793045552 2020 14.031185933288532 2021 15.310308717102853 2022 15.05744179119267