Year % of GDP 1991 70.30906177606178 1992 43.45733350703491 1993 19.178671059857223 1994 15.901141785569544 1995 19.217138408093565 1996 18.340118360072033 1997 21.564003487729863 1998 19.336937670033247 1999 20.45212211057144 2000 22.2944191905919 2001 25.141385860275484 2002 28.98703066848532 2003 30.861639918172273 2004 36.753849409965035 2005 42.03446461808137 2006 43.70134606515619 2007 51.17768507954332 2008 50.34927665522393 2009 54.08666373383676 2010 43.04442025518164 2011 41.584427233396134 2012 47.04788062800523 2013 52.52320997880092 2014 49.99307326366569 2015 43.6181609166427 2016 44.36736128537926 2017 43.779935893781364 2018 44.00341044874499 2019 43.61114452531916 2020 53.88723468085218 2021 49.47703990703368 2022 45.98229923957696 2023 49.657141247005455