Year Percent of GDP (Units) 1995 48.711 1996 43.144 1997 42.683 1998 38.669 1999 39.343 2000 36.376 2001 37.140 2002 41.542 2003 46.366 2004 45.137 2005 46.604 2006 47.271 2007 44.499 2008 46.735 2009 49.821 2010 54.010 2011 55.134 2012 54.784 2013 57.116 2014 51.390 2015 51.345 2016 54.501 2017 50.797 2018 48.709 2019 45.708 2020 57.175 2021 53.605 2022 49.296 2023 50.825 2024 55.084 2025 57.701 2026 59.518 2027 61.447 2028 62.648 2029 63.911