2012

6.3

1992

8.9

1946

7.6

1988

5.5

1987

6.7

1980

6.6

1985

5.3

2001

6.4

1943

8.2

2003

6.3

1986

6.3

1998

6.6

1984

8.1

1965

7.4

1971

6.4

2004

7.2

1984

7.2

2007

7.6

1969

7.6

1977

8.2