Year National currency (Billions) 2000 -0.134 2001 -0.533 2002 -0.316 2003 -0.663 2004 -1.057 2005 -1.199 2006 -1.125 2007 -0.107 2008 -0.504 2009 -1.657 2010 -2.331 2011 -2.607 2012 -3.893 2013 -3.230 2014 -3.305 2015 -3.871 2016 -4.715 2017 -8.455 2018 -5.789 2019 -8.979 2020 -10.118 2021 -7.675 2022 -12.853 2023 -18.544 2024 -16.661 2025 -15.370 2026 -15.671 2027 -15.010 2028 -14.992 2029 -16.401