Year	National currency (Billions)
1980	0.355
1981	0.399
1982	0.444
1983	0.492
1984	0.563
1985	0.650
1986	0.784
1987	0.910
1988	1.076
1989	1.185
1990	1.241
1991	1.301
1992	1.348
1993	1.445
1994	1.591
1995	1.559
1996	1.711
1997	1.838
1998	1.965
1999	2.069
2000	2.231
2001	2.161
2002	2.199
2003	2.312
2004	2.483
2005	2.762
2006	3.126
2007	3.544
2008	3.699
2009	3.316
2010	3.101
2011	3.072
2012	3.240
2013	3.190
2014	3.374
2015	3.609
2016	3.879
2017	3.964
2018	4.333
2019	4.524
2020	3.824
2021	4.213
2022	4.746
2023	5.277
2024	5.744
2025	6.097
2026	6.390
2027	6.697
2028	7.019
2029	7.358