1999

6.2

2009

6.0

1979

6.6

1939

7.5

1979

5.4

1989

4.8

2002

6.0

1995

5.5

2014

4.6

2022

7.2

2007

0.0

1988

6.7

1985

2.0

1991

6.8

2011

5.3

1986

6.7

2014

6.3

1969

8.0

2006

6.7

2001

6.8