1937

5.0

1998

8.1

2017

4.9

2003

6.8

2014

2.0

1936

7.6

2016

2.0

1980

7.3

1983

7.2

2016

7.2

2001

6.7

1999

7.3

2004

6.3

2005

6.3

2005

6.0

2002

7.1

1999

7.0

2002

5.9

2000

7.0

2017

6.9