2014

6.4

1971

6.8

1964

7.1

1954

8.0

1997

6.6

1954

7.9

1972

7.1

1986

7.6

1946

7.6

1958

7.4

1968

7.1

1995

7.9

1991

8.3

2003

6.5

2006

5.5

2000

6.1

1999

5.9

1999

7.0

1973

7.4

1969

7.4