2001

5.6

2009

5.6

2015

6.0

1998

5.4

2020

7.4

1973

7.3

1998

6.2

1985

6.2

1933

7.6

1961

7.4

1981

6.5

2006

7.8

1965

7.2

1946

7.6

1943

7.5

2000

5.2

2016

6.0

1993

4.9

1988

7.5

1984

7.5