1989

5.5

2013

6.2

2009

5.9

2012

7.0

1940

6.2

1960

7.5

1965

6.4

1980

7.9

1959

8.0

2002

7.5

2022

6.6

1989

6.2

2002

6.6

2001

7.5

1998

6.4

1985

6.7

2004

7.9

2019

8.2

1956

7.1

1999

7.6