Year	% of cohort
1973	77.6587524414062
1977	96.6433334350586
1978	94.0754699707031
1982	98.2721176147461
1983	91.3814315795898
1984	85.0766372680664
1985	92.1372604370117
1986	90.6932601928711
1987	92.8943481445312
1988	96.6964569091797
1989	96.5140609741211
1990	95.5065307617188
1991	79.8037109375
1992	89.5576705932617
1993	96.7983627319336
1994	98.2471084594727
1995	82.6619720458984
1996	83.6476821899414
1997	94.0984802246094
1998	97.1698303222656
1999	91.6495513916016
2000	95.1820983886719
2001	95.695198059082
2003	94.7961883544922
2004	95.5428695678711
2005	98.8541030883789
2006	96.6822128295898
2010	84.3422393798828
2012	93.1748123168945