Year	National currency (Billions)
1980	4.805
1981	4.952
1982	5.263
1983	5.542
1984	6.032
1985	6.318
1986	6.545
1987	7.012
1988	7.595
1989	8.209
1990	8.817
1991	8.882
1992	9.714
1993	9.782
1994	10.359
1995	11.387
1996	11.529
1997	11.834
1998	12.557
1999	13.184
2000	13.971
2001	14.523
2002	15.064
2003	15.459
2004	16.236
2005	17.024
2006	17.826
2007	18.735
2008	19.418
2009	19.027
2010	19.461
2011	19.542
2012	18.868
2013	17.626
2014	17.313
2015	17.904
2016	19.081
2017	20.175
2018	21.315
2019	22.495
2020	21.721
2021	23.873
2022	25.081
2023	25.698
2024	26.389
2025	27.148
2026	27.950
2027	28.811
2028	29.696
2029	30.581