Year	National currency (Billions)
1980	0.209
1981	0.232
1982	0.254
1983	0.281
1984	0.309
1985	0.344
1986	0.387
1987	0.436
1988	0.481
1989	0.522
1990	0.569
1991	0.613
1992	0.647
1993	0.688
1994	0.728
1995	0.765
1996	0.804
1997	0.844
1998	0.883
1999	0.898
2000	0.909
2001	0.909
2002	0.913
2003	0.959
2004	0.987
2005	1.019
2006	1.096
2007	1.187
2008	1.279
2009	1.327
2010	1.343
2011	1.332
2012	1.329
2013	1.375
2014	1.433
2015	1.508
2016	1.482
2017	1.453
2018	1.575
2019	1.506
2020	1.430
2021	1.570
2022	1.709
2023	1.844
2024	1.972
2025	2.088
2026	2.196
2027	2.305
2028	2.413
2029	2.523