Year Percent of GDP (Units) 1990 32.957 1991 34.472 1992 39.810 1993 27.590 1994 94.555 1995 39.243 1996 33.942 1997 29.156 1998 9.762 1999 11.141 2000 11.296 2001 12.509 2002 9.544 2003 21.475 2004 35.254 2005 48.905 2006 26.001 2007 28.144 2008 33.020 2009 26.433 2010 32.251 2011 38.654 2012 49.167 2013 47.557 2014 41.797 2015 38.461 2016 31.278 2017 37.899 2018 46.450 2019 47.963 2020 47.662 2021 61.956 2022 43.528 2023 38.582 2024 32.850 2025 33.149 2026 33.105 2027 33.587 2028 33.547 2029 33.375