1986

6.7

2001

7.1

2014

6.2

1962

7.0

2006

0.0

1979

6.9

1979

7.4

2001

6.9

1987

7.6

1996

7.2

2002

8.4

1993

8.6

2004

7.9

1977

7.1

1997

8.4

0.0

2005

6.7

1977

7.1

1979

5.8

1993

6.7