1968

6.6

2011

6.5

2012

7.3

2012

6.5

1962

6.9

2010

6.6

1947

7.0

2024

7.1

2021

7.2

2000

6.7

1942

5.8

1983

6.4

1989

6.3

1939

7.9

2015

6.0

1969

7.3

1957

6.8

1990

6.1

2003

6.0

1970

7.0