1987

6.2

2018

5.6

2008

6.0

2006

7.8

1954

6.2

2007

6.1

2019

7.1

1975

5.8

1984

2.0

1996

8.0

1928

0.0

1987

8.6

2008

2.0

2008

1.5

1986

7.0

1976

4.8

1995

7.6

2009

6.1

2016

0.0

2004

7.7