1979

8.3

1985

7.7

2001

7.8

2017

5.0

1994

7.0

2004

7.3

2015

7.0

2006

6.5

2017

5.5

1915

5.3

2019

0.0

1998

7.1

1993

7.8

1996

7.6

2002

5.2

1932

6.9

1991

6.8

1991

7.3

1989

8.3

1930

7.3