Year	National currency (Billions)
1980	0.951
1981	0.988
1982	0.987
1983	1.040
1984	1.145
1985	1.233
1986	1.375
1987	1.466
1988	1.542
1989	1.623
1990	1.672
1991	1.708
1992	1.728
1993	1.819
1994	1.941
1995	1.856
1996	1.979
1997	2.087
1998	2.186
1999	2.267
2000	2.407
2001	2.298
2002	2.322
2003	2.463
2004	2.605
2005	2.773
2006	3.126
2007	3.417
2008	3.416
2009	3.008
2010	2.772
2011	2.718
2012	2.809
2013	2.792
2014	2.898
2015	3.009
2016	3.175
2017	3.274
2018	3.498
2019	3.650
2020	3.011
2021	3.208
2022	3.480
2023	3.684
2024	3.908
2025	4.065
2026	4.178
2027	4.293
2028	4.412
2029	4.534