Year	National currency (Billions)
1980	1.032
1981	1.107
1982	1.167
1983	1.198
1984	1.337
1985	1.380
1986	1.533
1987	1.536
1988	1.665
1989	1.839
1990	2.043
1991	2.184
1992	2.377
1993	2.633
1994	2.827
1995	2.957
1996	3.139
1997	3.259
1998	3.445
1999	3.903
2000	3.992
2001	4.006
2002	4.252
2003	4.593
2004	4.969
2005	5.346
2006	5.689
2007	5.889
2008	6.023
2009	6.082
2010	6.341
2011	6.996
2012	7.548
2013	8.085
2014	8.830
2015	9.549
2016	10.117
2017	10.758
2018	11.407
2019	11.716
2020	10.509
2021	9.205
2022	10.109
2023	11.783
2024	12.897
2025	13.792
2026	14.712
2027	15.668
2028	16.660
2029	17.682