2009

7.0

1996

6.0

1969

6.9

1994

7.7

1997

6.0

2017

0.0

1995

7.3

1959

7.3

1997

7.0

1990

8.5

1978

6.8

1997

5.5

1991

0.0

1976

6.8

1982

7.8

1994

8.7

1999

7.5

1993

7.9

2006

6.6

2021

0.0