Year % of GDP 1990 16.482179567149085 1991 17.334293917278014 1992 18.207236976072764 1993 21.09257495921135 1994 20.403468529588665 1995 22.43408903597947 1997 21.174838922013087 1998 19.052923792802094 1999 19.67084665809161 2002 22.077126479230134 2003 20.809531973224757 2004 21.36841755929609 2005 25.459656321554487 2006 22.944238832604118 2007 23.331035096736656 2008 24.413214298717694 2009 23.986402614420644 2010 25.028144803024176 2011 27.06399922975417 2012 27.368720415520563 2013 25.698716149995253 2014 25.417033633097475 2015 23.06060833729857 2016 22.7685873873314 2017 22.67927122982309 2018 22.857506921221482 2019 23.38767788643014 2020 27.21021230695771 2021 25.66776357320226 2022 28.216413785032607