1987

5.8

1960

7.6

2001

7.3

1975

8.0

1973

7.6

2019

6.1

1981

10.0

1943

5.7

2007

6.6

1943

6.5

1999

7.4

2004

5.9

2008

5.6

2003

6.6

1971

5.8

2003

5.5

1995

7.3

2010

6.7

2010

6.6

2018

7.0