1967

7.6

1999

7.5

1996

6.4

2001

6.6

2001

2.0

1989

7.4

1982

7.0

2021

0.0

2020

0.0

1967

7.4

2002

8.0

1984

7.1

1976

0.0

1991

6.9

2004

6.0

1975

7.0

1987

7.0

2012

0.0

2006

7.8

2005

8.0