Year	National currency (Billions)
1980	10.485
1981	10.684
1982	10.011
1983	9.500
1984	9.215
1985	9.132
1986	8.913
1987	8.129
1988	9.007
1989	9.214
1990	9.076
1991	7.823
1992	8.128
1993	7.950
1994	7.393
1995	8.229
1996	9.150
1997	9.791
1998	10.006
1999	9.916
2000	9.906
2001	10.392
2002	10.781
2003	11.449
2004	12.285
2005	12.889
2006	13.632
2007	14.328
2008	14.922
2009	15.372
2010	16.166
2011	17.111
2012	17.573
2013	18.088
2014	18.134
2015	17.515
2016	16.654
2017	16.915
2018	17.752
2019	17.959
2020	15.090
2021	14.723
2022	15.081
2023	15.405
2024	15.861
2025	16.335
2026	16.825
2027	17.329
2028	17.849
2029	18.385