Year	National currency (Billions)
1980	0.712
1981	0.721
1982	0.751
1983	0.776
1984	0.806
1985	0.855
1986	0.918
1987	1.001
1988	1.030
1989	1.069
1990	1.114
1991	1.130
1992	1.121
1993	1.099
1994	1.119
1995	1.144
1996	1.194
1997	1.252
1998	1.400
1999	1.498
2000	1.574
2001	1.542
2002	1.595
2003	1.746
2004	1.735
2005	1.965
2006	1.886
2007	2.002
2008	2.021
2009	1.887
2010	1.878
2011	1.892
2012	1.870
2013	1.914
2014	2.055
2015	2.187
2016	2.269
2017	2.370
2018	2.473
2019	2.490
2020	2.147
2021	2.248
2022	2.412
2023	2.528
2024	2.633
2025	2.729
2026	2.811
2027	2.886
2028	2.965
2029	3.045