1961

7.6

1974

7.8

2013

6.0

1950

8.1

2019

6.3

1971

7.6

1981

6.1

1987

5.7

2001

7.3

2004

6.1

1976

7.0

2005

6.0

1983

5.0

2001

6.9

2000

3.0

2024

6.1

1972

6.3

1976

5.6

2007

5.9

2007

3.8