Year % GDP 1974 0.6292151146742303 1975 0.2932441447262165 1976 0.30536080617761996 1977 0.35417182882718473 1978 0.3976374028753228 1979 0.38781060890225033 1980 0.2246111064015646 1981 0.23405374425353515 1982 0.18821803916190552 1983 0.18832537471016553 1984 0.1944431956827051 1985 0.1980340118333503 1986 0.1923216913811037 1987 0.2012923141978852 1988 0.15634834580342322 1989 0.34066760801590157 1991 0.6660426261565979 1992 1.5884489332316878 1993 1.947354547479135 1994 3.879707546152542 1995 2.849718540987771 1996 1.0159394768010142 1997 0.6877794561398501 1998 7.8628257608134255 1999 4.999545037739179 2000 1.991835526717901 2001 2.029503292538139 2002 2.0549174965898334 2003 2.5581693730522805 2004 3.3521157621189195 2005 3.809670051631992 2006 4.744132337940559 2007 5.259374880937116 2008 6.1266498558877585 2009 7.946963176041404 2010 9.36698515953382 2011 10.374263636346214 2012 10.046775620627821 2013 11.820774149306793 2014 11.440448183392563 2015 12.744949427578561 2016 13.020664595354864 2017 16.752353794963085 2018 16.976407905188484 2019 14.30787156773205 2020 13.418605254174679 2021 12.899695062302206 2022 14.787430409394037