1981

6.7

1993

6.1

2009

6.2

1929

5.2

2003

6.6

2024

7.4

6.3

1968

6.9

2015

5.9

2008

6.8

1957

7.1

1957

7.0

2001

5.4

1944

7.3

1956

7.7

2002

5.9

1972

7.4

1999

7.2

1986

6.4