Year	%
1978	96.21149
1979	97.98553
1995	95.7374
1996	82.63923
1998	95.03939
1999	94.92002
2000	97.21262
2001	97.47874
2002	99.24505
2003	99.27826
2016	99.07912
2017	99.27289