1996

6.6

1996

8.0

1987

7.6

1928

7.0

1931

8.3

1965

7.5

2002

7.2

1966

7.3

1958

7.6

1985

6.2

2009

6.4

1995

4.0

1979

6.4

2005

2.9

1984

6.5

2012

7.1

2009

3.2

1969

3.9

1954

7.8

2004

7.1