2006

6.7

2007

7.4

2001

7.5

2012

6.4

1968

5.8

2012

5.4

2003

5.5

1964

6.3

1951

6.0

1972

7.4

1955

6.0

1968

7.1

1956

6.9

1989

6.9

1997

6.0

2020

9.3

1935

7.3

1942

7.1

1954

7.1

1976

6.6