Year % of GDP 1992 24.64406779661017 1993 16.326151560178307 1994 33.03853685417605 1995 43.129901029660836 1996 45.67304273142669 1997 36.43176435539705 1998 40.59309783474407 1999 29.22785342765816 2000 7.805932446567265 2001 22.451701314304596 2002 25.355066818571565 2003 32.14521335339065 2004 38.5336864801528 2005 42.56765107179547 2006 38.72846714283241 2007 38.83594496881273 2008 43.96489448829628 2009 39.681746913475365 2010 45.44248708225785 2011 46.82707988627218 2012 42.3118148042608 2013 38.24999240805171 2014 41.77777967097946 2015 44.18252459770019 2016 34.159331593838985 2017 47.60481323790067 2018 58.724093242598286 2019 42.89066935801118 2020 43.450985430441676 2021 51.738270344395666 2022 41.15252753103207 2023 42.17929130073949