Year	National currency (Billions)
1998	-0.045
1999	-0.046
2000	-0.058
2001	-0.015
2002	-0.017
2003	-0.024
2004	-0.100
2005	-0.168
2006	0.231
2007	0.331
2008	0.396
2009	0.062
2010	-0.548
2011	0.337
2012	0.350
2013	0.099
2014	0.677
2015	-0.705
2016	-1.219
2017	-3.358
2018	-1.143
2019	-0.954
2020	-2.868
2021	0.201
2022	0.555
2023	-0.330
2024	-2.542
2025	-2.766
2026	-3.340
2027	-3.566
2028	-4.151
2029	-4.195