1902

7.9

2012

6.2

1964

4.0

1979

6.4

1994

7.5

2001

7.8

1972

6.4

1999

6.3

1956

7.3

1955

6.0

1971

7.4

1984

6.2

1988

7.0

1981

6.5

1983

6.1

1990

7.3

1995

8.0

1993

7.0

2001

5.8

1968

7.6