Year	National currency (Billions)
1990	-0.132
1991	-0.071
1992	-0.115
1993	-0.065
1994	-0.130
1995	-0.106
1996	0.007
1997	-0.183
1998	-0.151
1999	-0.144
2000	0.260
2001	0.025
2002	-0.123
2003	-0.074
2004	0.012
2005	0.175
2006	0.163
2007	0.130
2008	0.412
2009	-0.482
2010	-0.936
2011	-0.551
2012	-0.693
2013	-1.087
2014	-0.434
2015	-2.135
2016	-2.112
2017	-1.871
2018	-1.678
2019	-1.303
2020	-2.332
2021	-1.623
2022	-0.899
2023	-1.399
2024	-1.213
2025	-1.395
2026	-1.550
2027	-1.695
2028	-1.853
2029	-2.019