1980

8.2

1996

7.0

2022

4.3

1960

8.4

1982

7.2

2011

5.5

2012

4.0

1995

5.2

2016

6.3

1971

6.7

1932

7.3

2003

6.2

1998

7.1

2011

0.0

1968

7.6

2008

5.3

2009

0.0

2007

4.4

2005

5.2

1989

6.6