1987

6.4

2015

9.0

1968

6.0

1995

7.7

1994

8.3

1999

7.6

1966

6.1

1992

7.1

1990

7.0

1979

6.9

1989

5.8

2001

8.1

1983

5.2

2002

7.4

1987

7.3

2021

0.0

1999

7.1

6.1

1993

0.0

2004

8.2