Year National currency (Billions) 2000 1.045 2001 1.284 2002 1.343 2003 1.487 2004 1.667 2005 1.816 2006 2.170 2007 2.689 2008 3.103 2009 2.994 2010 3.125 2011 3.265 2012 3.181 2013 3.362 2014 3.458 2015 3.655 2016 3.954 2017 4.299 2018 4.663 2019 4.951 2020 4.186 2021 4.955 2022 5.924 2023 6.847 2024 7.428 2025 7.888 2026 8.315 2027 8.749 2028 9.203 2029 9.680