Year	National currency (Billions)
1980	0.942
1981	0.972
1982	0.968
1983	0.993
1984	1.068
1985	1.205
1986	1.284
1987	1.396
1988	1.528
1989	1.721
1990	1.967
1991	1.980
1992	2.221
1993	2.456
1994	2.459
1995	2.420
1996	2.500
1997	2.830
1998	3.201
1999	3.328
2000	3.513
2001	3.645
2002	3.822
2003	3.811
2004	4.616
2005	5.055
2006	5.610
2007	6.926
2008	9.147
2009	11.533
2010	11.705
2011	12.609
2012	14.519
2013	16.015
2014	17.688
2015	19.071
2016	20.891
2017	22.865
2018	24.822
2019	26.224
2020	24.356
2021	25.164
2022	29.373
2023	30.186
2024	31.101
2025	32.952
2026	35.032
2027	37.401
2028	39.978
2029	42.715