Year	National currency (Billions)
1980	0.760
1981	0.762
1982	0.704
1983	0.747
1984	0.832
1985	0.820
1986	0.879
1987	1.073
1988	1.189
1989	1.373
1990	1.527
1991	1.703
1992	1.908
1993	2.027
1994	2.030
1995	2.043
1996	2.065
1997	2.139
1998	2.222
1999	2.422
2000	2.737
2001	2.874
2002	3.022
2003	3.303
2004	3.457
2005	3.539
2006	3.694
2007	3.815
2008	3.757
2009	3.740
2010	3.786
2011	3.775
2012	3.913
2013	4.087
2014	4.250
2015	4.387
2016	4.387
2017	4.307
2018	4.353
2019	4.537
2020	3.914
2021	4.613
2022	5.016
2023	5.252
2024	5.430
2025	5.568
2026	5.709
2027	5.855
2028	6.003
2029	6.156