1973

7.5

2021

6.9

2014

7.1

2023

7.5

1958

6.4

1999

7.6

1991

6.3

1999

7.2

1989

7.2

1996

6.8

1990

7.8

2003

7.6

1994

7.4

1953

7.7

1980

6.0

1988

5.2

2011

8.8

1929

6.5

1984

8.0

1998

7.3