Year National currency (Billions) 2003 1.537 2004 1.308 2005 1.380 2006 1.399 2007 0.542 2008 0.542 2009 0.843 2010 0.542 2011 -0.016 2012 -0.247 2013 -0.520 2014 -0.864 2015 -0.733 2016 -0.626 2017 -0.350 2018 -0.470 2019 -0.341 2020 0.344 2021 0.690 2022 1.245 2023 1.434 2024 1.785 2025 2.119 2026 2.480 2027 2.880 2028 3.316 2029 3.816