1990

6.3

1994

4.9

1980

7.3

1993

0.0

1966

6.5

1966

6.5

1965

6.3

1964

6.5

1974

7.9

1996

6.6

2003

5.6

1971

7.2

1986

6.3

2007

3.9

2004

6.2

1998

5.9

2003

6.3

1984

7.1

2000

5.5

1993

6.5