1959

7.2

1996

6.4

1946

7.8

1961

7.6

1999

7.5

2021

7.3

1994

7.0

2006

6.1

2006

6.7

2012

6.7

1998

6.9

1987

6.9

1961

7.2

2001

7.3

2004

6.9

1946

7.5

1995

7.7

2005

7.6

2000

6.5

2006

7.3