Year % of GDP 1995 12.539160488321535 1996 8.65931886851316 1997 3.4130555926702013 1998 5.276992750443223 1999 5.022240686033152 2000 4.098758065231793 2001 3.762680436091956 2002 4.110881714494977 2003 4.724522304385046 2004 7.0303855721261215 2005 7.906394005106086 2006 10.505230838988718 2007 6.1682286579204595 2008 13.645601130101884 2009 12.566977853390446 2010 12.518836987942514 2011 11.30271853340914 2012 13.19187674530947 2013 15.496830669092256 2014 19.885836151499646 2015 22.694591064755603 2016 20.47999408937651 2017 21.275278286265518 2018 23.251138978468543 2019 23.11704116624629 2020 26.477637513127167 2021 23.974470434882843 2022 20.640081750544258