Year	National currency (Billions)
1980	4890831.570
1981	4612211.302
1982	5680918.107
1983	6310745.412
1984	5860167.624
1985	5969615.041
1986	5385493.846
1987	5376224.997
1988	5049243.174
1989	5358868.606
1990	6087402.852
1991	6861486.035
1992	7087776.603
1993	6983514.596
1994	6864914.537
1995	7029744.193
1996	7476169.927
1997	7577128.072
1998	7734733.228
1999	7889636.439
2000	8350827.305
2001	8550593.517
2002	9241381.370
2003	10039771.882
2004	10475163.254
2005	10809300.439
2006	11349743.331
2007	12275402.692
2008	12306196.344
2009	12430167.177
2010	13150860.600
2011	13498795.276
2012	12992972.280
2013	12795221.944
2014	13433034.977
2015	13241629.685
2016	14408890.814
2017	14806360.823
2018	14534218.790
2019	14087932.814
2020	14557101.615
2021	15244164.455
2022	15819881.000
2023	16564838.120
2024	17115834.795
2025	17637901.992
2026	18122106.315
2027	18547110.787
2028	18916775.281
2029	19294513.265