2007

7.6

1968

6.3

1985

6.1

2002

6.7

2007

7.2

1973

5.5

2001

5.1

1973

7.1

1976

6.7

1977

6.0

1988

6.7

2014

4.2

1996

6.1

1996

6.1

1998

7.1

1995

6.5

1974

7.5

1994

6.3

1999

0.0

1975

0.0