1982

6.6

1970

7.5

2017

6.8

2007

3.9

2004

6.2

2005

7.1

2001

0.0

2003

0.0

1993

6.5

1996

6.1

1992

6.7

1937

7.2

2021

5.5

1979

7.8

2005

5.4

1966

6.4

2013

4.8

2020

0.0

1985

5.6

2008

4.1