Year	National currency (Billions)
1980	0.003
1981	0.003
1982	0.003
1983	0.003
1984	0.003
1985	0.004
1986	0.005
1987	0.006
1988	0.009
1989	0.012
1990	0.017
1991	0.022
1992	0.031
1993	0.054
1994	0.097
1995	0.148
1996	0.300
1997	0.422
1998	0.501
1999	0.554
2000	0.612
2001	0.633
2002	0.726
2003	0.893
2004	1.035
2005	1.321
2006	1.660
2007	1.958
2008	2.763
2009	3.253
2010	3.529
2011	4.021
2012	4.407
2013	4.966
2014	5.450
2015	5.783
2016	6.512
2017	7.056
2018	8.022
2019	9.106
2020	10.211
2021	10.942
2022	12.734
2023	14.861
2024	16.852
2025	18.436
2026	20.013
2027	21.703
2028	23.505
2029	25.467