1977

7.2

1978

0.0

1981

6.6

1986

7.1

1980

4.5

2012

7.5

2022

6.2

1989

5.9

1989

7.0

1987

0.0

1997

3.5

1991

0.0

2012

0.0

2005

6.7

2015

5.8

2010

8.0

2022

7.2

1979

6.8

2006

7.1

1993

6.1

1990

6.0

1968

6.7

1983

7.0

1982

7.7

1979

6.7

2016

8.2

1981

7.0