Year National currency (Billions) 1992 0.591 1993 0.653 1994 0.697 1995 0.718 1996 0.746 1997 0.806 1998 1.141 1999 1.006 2000 0.912 2001 0.901 2002 1.039 2003 1.069 2004 1.178 2005 1.222 2006 1.402 2007 1.402 2008 1.457 2009 1.419 2010 1.538 2011 1.804 2012 1.912 2013 2.088 2014 2.358 2015 2.550 2016 2.669 2017 2.799 2018 3.205 2019 3.137 2020 2.475 2021 1.905 2022 2.160 2023 2.711 2024 3.533 2025 3.775 2026 3.987 2027 4.222 2028 4.470 2029 4.735