Year	National currency (Billions)
1980	0.502
1981	0.515
1982	0.547
1983	0.535
1984	0.587
1985	0.625
1986	0.680
1987	0.736
1988	0.812
1989	0.861
1990	0.908
1991	0.929
1992	0.958
1993	1.009
1994	1.064
1995	1.101
1996	1.166
1997	1.251
1998	1.264
1999	1.314
2000	1.441
2001	1.518
2002	1.539
2003	1.478
2004	1.537
2005	1.687
2006	1.740
2007	1.750
2008	1.946
2009	1.880
2010	1.881
2011	1.912
2012	1.902
2013	2.010
2014	2.163
2015	2.178
2016	2.263
2017	2.264
2018	2.310
2019	2.404
2020	2.054
2021	2.035
2022	2.215
2023	2.291
2024	2.400
2025	2.502
2026	2.597
2027	2.676
2028	2.753
2029	2.831