1985

5.3

1987

6.7

2005

4.7

1998

6.0

2002

4.6

1991

5.3

2009

7.9

2017

8.1

1958

7.3

1946

7.6

1972

6.2

1981

7.1

1988

5.4

2008

6.5

1964

7.5

1991

8.3

1956

7.5

2003

8.3

1988

7.3

1988

6.2