1987

7.5

2021

6.4

2002

7.0

1951

5.4

2021

6.6

1999

4.3

2005

5.6

1966

6.4

1980

6.1

1995

6.9

1963

7.2

1981

6.9

2010

5.9

2003

6.9

1924

7.7

2015

6.2

1935

6.5

1994

7.5

2008

7.0

2019

7.1