1992

5.0

1986

5.8

1997

5.5

1966

5.7

1996

6.4

1989

5.8

2014

4.4

1973

6.5

1932

7.4

1931

5.5

1993

3.6

1999

6.1

2008

3.3

1963

6.9

2009

5.8

2021

4.0

2017

7.0

1995

6.8

2017

5.4

1992

6.3