Year National currency (Billions) 1986 1.674 1987 1.943 1988 2.305 1989 2.583 1990 2.686 1991 2.900 1992 3.071 1993 3.295 1994 3.566 1995 3.655 1996 3.701 1997 3.960 1998 4.039 1999 4.095 2000 4.409 2001 4.594 2002 4.550 2003 4.601 2004 4.936 2005 4.917 2006 4.973 2007 5.127 2008 5.221 2009 4.611 2010 4.485 2011 4.636 2012 4.588 2013 4.883 2014 4.805 2015 4.775 2016 4.858 2017 5.200 2018 5.324 2019 5.201 2020 3.954 2021 5.047 2022 5.574 2023 5.870 2024 5.934 2025 5.994 2026 6.060 2027 6.126 2028 6.194 2029 6.262