Year	National currency (Units)
1980	50854.219
1981	53319.417
1982	52932.014
1983	52046.620
1984	47096.309
1985	48859.677
1986	45044.237
1987	44111.118
1988	48099.995
1989	43716.820
1990	46639.949
1991	50139.844
1992	55172.476
1993	57633.726
1994	59218.412
1995	60849.921
1996	61135.891
1997	59048.095
1998	60866.743
1999	57541.610
2000	57364.059
2001	57897.575
2002	59632.623
2003	56746.588
2004	58829.100
2005	60492.994
2006	62006.057
2007	63937.379
2008	65181.289
2009	67362.715
2010	68700.773