Year National currency (Billions) 1986 0.726 1987 0.873 1988 1.068 1989 1.245 1990 1.369 1991 1.561 1992 1.716 1993 1.939 1994 2.230 1995 2.364 1996 2.470 1997 2.742 1998 2.981 1999 3.084 2000 3.353 2001 3.395 2002 3.512 2003 3.659 2004 4.036 2005 4.224 2006 4.421 2007 4.793 2008 5.089 2009 4.571 2010 4.392 2011 4.722 2012 4.681 2013 4.883 2014 4.996 2015 5.304 2016 5.341 2017 5.535 2018 5.864 2019 6.078 2020 4.580 2021 5.555 2022 6.345 2023 7.047 2024 7.284 2025 7.483 2026 7.710 2027 7.951 2028 8.199 2029 8.455