2021

4.1

1998

4.6

2003

6.1

1990

6.3

2002

3.0

2003

6.1

2006

5.3

1922

7.7

1990

5.3

2017

5.9

1973

6.0

2001

4.7

1983

5.8

1982

5.9

1962

6.3

2002

5.5

1957

4.8

2002

5.4

2011

6.3

1997

6.0