2001

6.7

2000

7.2

1941

4.7

1948

5.3

2006

4.8

1998

6.8

1971

7.0

1951

5.1

1991

6.5

1968

5.4

1978

6.0

1986

6.5

2017

5.1

2008

6.4

1998

8.3

2002

7.5

1993

7.8

2006

6.5

2000

6.8

1955

7.1