1999

7.6

1982

0.0

1997

7.5

1999

7.3

1979

7.0

1980

7.8

1993

8.3

1996

7.0

1988

5.7

1969

7.4

2006

8.1

2009

8.0

2003

6.6

1969

8.3

2019

7.8

2004

0.0

2017

6.6

1972

8.0

2006

5.7

1985

6.5