1995

6.3

1949

6.6

1950

8.1

1950

8.1

1964

6.0

1960

4.7

1984

0.0

1955

7.5

2008

6.9

1960

6.0

1961

5.4

1999

4.8

1968

7.0

1977

7.3

2006

6.3

2002

6.1

2004

5.9

1960

0.0

1946

7.1

1995

6.6