Year % of GDP 1995 19.54041264953911 1996 19.562315742911554 1997 19.440657372588532 1998 18.881636884553455 1999 18.310348010532994 2000 18.321350966179413 2001 18.03916339172616 2002 17.573159047954608 2003 17.926641503680102 2004 18.591483571257587 2005 18.35817392872038 2006 18.553459218739203 2007 18.348625374276747 2008 17.962078420246 2009 17.0786107328695 2010 17.930207896933418 2011 18.613509121532275 2012 18.07001145480648 2013 17.45640259751783 2014 18.60382258675955 2015 18.858783843974376 2016 18.947684642133474 2017 18.25727590561054 2018 17.852783427018124 2019 17.54318752987479 2020 16.845717633129897 2021 17.066209060539546 2022 17.127627964658963 2023 16.399007080538198