1999

7.6

2019

7.5

1938

5.5

2010

6.1

1983

5.3

1996

6.5

1985

6.5

2006

6.1

1984

5.3

2005

6.2

1986

5.5

1997

4.5

1968

6.9

2006

5.6

1994

4.7

1978

7.3

2011

6.0

2002

0.0

2011

6.1

2020

8.2