Year	National currency (Billions)
1998	-0.039
1999	-0.216
2000	-0.172
2001	-0.148
2002	-0.211
2003	-0.152
2004	-0.110
2005	-0.139
2006	-0.078
2007	0.135
2008	-0.767
2009	-1.319
2010	-1.162
2011	-0.647
2012	0.038
2013	-0.128
2014	-0.397
2015	-0.374
2016	-0.126
2017	-0.222
2018	-0.215
2019	-0.116
2020	-1.124
2021	-1.845
2022	-1.424
2023	-1.068
2024	-1.253
2025	-1.121
2026	-0.897
2027	-0.598
2028	-0.643
2029	-0.644