Year	National currency (Billions)
1980	1902.736
1981	2004.438
1982	2109.327
1983	2179.237
1984	2325.787
1985	2441.079
1986	2545.588
1987	2582.593
1988	2652.281
1989	2711.966
1990	2879.390
1991	3190.958
1992	3090.922
1993	3322.016
1994	3588.965
1995	3806.140
1996	4269.047
1997	4708.378
1998	4630.887
1999	4764.222
2000	5165.256
2001	5064.640
2002	5253.379
2003	5565.447
2004	5868.489
2005	6234.789
2006	6712.890
2007	7169.150
2008	7595.721
2009	7864.524
2010	8494.944
2011	9231.412
2012	10028.284
2013	10434.604
2014	11100.121
2015	11566.987
2016	12151.541
2017	12936.613
2018	13235.457
2019	13206.276
2020	12595.551
2021	13037.934
2022	12017.849