Year	National currency (Billions)
1980	0.459
1981	0.524
1982	0.494
1983	0.532
1984	0.679
1985	0.767
1986	0.917
1987	1.013
1988	1.159
1989	1.313
1990	1.564
1991	1.655
1992	1.818
1993	1.848
1994	1.926
1995	2.058
1996	2.128
1997	2.175
1998	2.367
1999	2.487
2000	2.516
2001	2.408
2002	2.428
2003	2.664
2004	2.878
2005	3.064
2006	3.422
2007	3.593
2008	3.852
2009	3.779
2010	3.949
2011	4.236
2012	4.315
2013	4.482
2014	4.724
2015	4.880
2016	5.045
2017	5.397
2018	5.564
2019	5.677
2020	4.112
2021	4.994
2022	6.201
2023	6.654
2024	6.970
2025	7.292
2026	7.607
2027	7.914
2028	8.233
2029	8.566