Year National currency (Billions) 1985 10.629 1986 7.167 1987 8.154 1988 7.424 1989 8.014 1990 8.924 1991 9.077 1992 9.001 1993 9.028 1994 9.167 1995 10.138 1996 10.158 1997 10.458 1998 8.958 1999 9.796 2000 11.464 2001 11.120 2002 11.594 2003 12.659 2004 14.743 2005 17.578 2006 20.195 2007 20.453 2008 22.602 2009 17.298 2010 18.690 2011 23.303 2012 23.802 2013 22.639 2014 21.664 2015 17.778 2016 15.748 2017 16.748 2018 18.301 2019 18.375 2020 16.564 2021 18.822 2022 23.003 2023 20.319 2024 20.893 2025 22.086 2026 23.027 2027 24.038 2028 25.267 2029 26.740