2021

3.8

1996

5.9

1989

5.5

2013

6.5

1993

6.5

1937

7.2

2003

6.3

1985

6.7

2006

6.1

1967

7.4

2004

7.1

2021

9.2

1989

6.2

2016

5.7

2013

6.2

1972

7.5

2016

6.1

1995

7.9

1972

7.0

2009

5.8