1999

6.9

2017

0.0

2003

5.8

1998

6.8

2016

7.6

1970

7.3

1981

6.8

2008

6.5

1984

6.6

1968

7.2

1982

7.4

1996

5.8

1937

3.3

2012

1.5

2004

7.1

1980

7.7

1998

5.3

2014

0.0

2006

6.5

1930

0.0