2006

6.6

1935

7.0

1992

7.6

1952

6.7

2007

4.9

2011

7.4

2008

6.1

1968

7.3

1996

6.0

1993

6.8

1964

7.1

6.8

1979

4.7

1961

7.7

1950

7.3

1985

5.1

1986

5.8

1965

7.6

1950

7.0

2013

5.4