Year Percent of GDP (Units) 1994 24.143 1995 25.729 1996 25.251 1997 27.871 1998 26.685 1999 26.908 2000 27.877 2001 28.065 2002 27.655 2003 28.492 2004 27.108 2005 27.578 2006 25.817 2007 26.284 2008 27.602 2009 25.924 2010 24.977 2011 27.448 2012 26.555 2013 24.929 2014 25.591 2015 25.867 2016 28.275 2017 28.583 2018 28.981 2019 28.949 2020 30.157 2021 28.157 2022 28.951 2023 26.664 2024 27.330 2025 27.315 2026 27.245 2027 27.146 2028 27.052 2029 27.063