Year	National currency (Billions)
1980	15.258
1981	15.303
1982	14.701
1983	14.106
1984	14.078
1985	13.842
1986	13.486
1987	13.818
1988	14.220
1989	14.759
1990	15.443
1991	16.256
1992	16.524
1993	17.230
1994	18.034
1995	18.877
1996	19.701
1997	20.677
1998	21.717
1999	21.809
2000	22.356
2001	22.733
2002	23.298
2003	23.929
2004	24.928
2005	26.030
2006	27.279
2007	28.524
2008	30.278
2009	31.294
2010	32.586
2011	34.281
2012	36.037
2013	38.487
2014	40.588
2015	42.560
2016	44.374
2017	46.236
2018	48.189
2019	49.257
2020	44.953
2021	47.700
2022	49.420
2023	50.656
2024	51.466
2025	52.598
2026	53.755
2027	54.992
2028	56.257
2029	57.551