1921

5.9

2016

9.7

2013

6.1

2015

3.2

1972

6.5

1999

7.0

2011

5.0

1985

3.0

1989

4.0

2002

8.0

2012

6.0

1964

6.0

1988

6.2

1940

5.4

1979

5.0

1993

4.8

2006

6.0

2015

8.5

1958

6.0

2017

7.6