1975

6.7

1967

7.5

2006

7.6

2008

5.6

1967

7.5

1998

6.9

2004

6.3

1967

4.4

2022

7.0

2005

7.7

1986

6.3

2014

7.1

1928

8.0

1986

7.7

1995

7.0

1995

6.7

2004

7.2

2001

6.8

1990

7.7

2006

7.5