Year % of GDP 1995 34.268603983873376 1996 33.47397574741576 1997 30.51735237652631 1998 25.22056835906272 1999 23.38640728594717 2000 22.25333384338476 2001 21.92167346882876 2002 22.511472107086348 2003 22.05862567941746 2004 22.669180386194583 2005 24.620002360134567 2006 27.893454067640242 2007 31.787333858410125 2008 34.20188823059402 2009 36.23887581680357 2010 39.074741188987105 2011 42.77563004677373 2012 45.04557559591236 2013 46.80093231780667 2014 49.01894666460674 2015 48.60461263247204 2016 48.180143931403364 2017 48.24566367204215 2018 49.25222973897348 2019 51.13722336484305 2020 54.79586394819766 2021 51.511865304160004 2022 50.576371913895336 2023 50.877246859468045