Year Percent of GDP (Units) 1990 55.311 1991 53.525 1992 50.661 1993 49.261 1994 54.230 1995 47.591 1996 41.167 1997 39.334 1998 39.851 1999 53.430 2000 54.195 2001 51.904 2002 53.152 2003 55.261 2004 58.516 2005 50.488 2006 44.715 2007 48.424 2008 50.228 2009 57.248 2010 61.098 2011 63.989 2012 67.809 2013 70.018 2014 75.069 2015 75.075 2016 79.434 2017 68.981 2018 69.396 2019 68.075 2020 79.477 2021 89.956 2022 87.933 2023 85.785 2024 87.491 2025 85.837 2026 82.750 2027 79.040 2028 75.763 2029 71.613