Year National currency (Billions) 2000 1.551 2001 1.729 2002 1.866 2003 2.092 2004 2.332 2005 2.541 2006 2.755 2007 2.888 2008 2.789 2009 2.645 2010 2.602 2011 2.607 2012 2.482 2013 2.405 2014 2.463 2015 2.515 2016 2.617 2017 2.656 2018 2.725 2019 2.818 2020 2.531 2021 2.811 2022 3.210 2023 3.446 2024 3.614 2025 3.757 2026 3.881 2027 4.006 2028 4.134 2029 4.267