1991

5.6

2011

2.8

1977

6.0

1976

0.0

1996

6.9

2013

6.7

2007

7.5

1970

3.0

1986

0.0

2004

5.8

1980

6.4

1981

7.0

2005

7.3

1980

6.7

1997

5.3

2023

7.0

2007

7.1

2012

5.0

1984

6.3

1982

0.0

1976

0.0

1990

7.4

2010

5.8

1996

5.0

1989

5.5

1998

5.8

1965

6.9

1978

7.0

1971

7.5