Year	National currency (Billions)
1980	0.925
1981	0.841
1982	0.833
1983	0.837
1984	0.853
1985	0.903
1986	0.946
1987	0.951
1988	0.978
1989	1.035
1990	0.969
1991	0.945
1992	0.984
1993	1.001
1994	1.065
1995	1.134
1996	1.217
1997	1.227
1998	1.240
1999	1.232
2000	1.295
2001	1.391
2002	1.469
2003	1.546
2004	1.594
2005	1.699
2006	1.736
2007	1.744
2008	1.806
2009	1.796
2010	1.842
2011	1.913
2012	1.841
2013	1.843
2014	1.856
2015	1.927
2016	2.081
2017	2.110
2018	2.097
2019	2.191
2020	2.123
2021	1.972
2022	1.868
2023	2.017
2024	2.125
2025	2.198
2026	2.257
2027	2.306
2028	2.352
2029	2.399