1969

7.0

2003

6.1

2000

7.4

1965

6.7

1977

6.8

1981

6.5

1995

7.9

1999

7.3

1984

6.7

1964

6.2

1987

6.0

2021

6.4

1989

7.3

1968

0.0

1980

6.2

1955

4.7

2011

6.6

2002

5.3

2001

6.9

1982

6.8