1999

6.4

2018

5.7

2003

8.2

1957

8.2

2006

5.8

1988

6.8

1944

6.6

2017

7.5

1964

6.6

1954

6.2

2001

7.0

1992

6.3

2006

6.7

2006

6.6

1989

7.2

1977

5.6

1996

7.1

2007

6.3

1953

6.0

2014

5.2