Year % of GDP 1990 10.540737993068866 1991 11.827739504067319 1992 12.241938282617344 1993 11.983601005207328 1994 12.719784107164378 1995 11.169323111738297 1996 8.944228967999868 1997 8.122211618309613 1998 4.145124406215673 1999 4.849437110329036 2000 14.206374742693932 2001 14.826213370957426 2002 14.610393431462073 2003 16.430676864975336 2004 19.438124125014298 2005 20.25517990929847 2006 22.430268351779116 2007 24.09403531377695 2008 25.5341942377647 2009 21.8960941595015 2010 21.7547918658289 2011 24.860996733045624 2012 23.845567217877445 2013 24.449116178863463 2014 23.75949230158497 2015 22.6987673925511 2016 23.3360093040661 2017 25.051231863537144 2018 27.161790105037593 2019 26.60640090183859 2020 24.600078651480498 2021 23.817133855291893 2022 24.2992645005865 2023 23.28717094259445