0.0

1973

5.6

1993

8.6

1981

8.1

2001

7.4

1998

8.2

1937

7.9

1982

7.6

1959

8.3

1961

8.0

1957

7.8

2018

7.8

1984

4.3

2005

7.1

2000

5.9

1959

7.7

1970

6.9

2015

3.0

2020

7.0

2024

7.5