1992

6.8

1987

6.9

1982

7.0

1975

5.1

2005

0.0

1991

7.1

1994

5.8

2020

0.0

2006

6.3

2020

6.7

1994

6.6

1989

6.6

1979

5.7

2000

5.5

1990

6.5

2018

7.1

1991

7.1

1966

7.9

1986

6.3

2004

7.3