2013

2.3

1957

5.3

1997

6.8

2006

6.9

2004

5.7

2005

7.0

2001

6.2

2000

6.0

1990

7.0

1993

6.3

1954

8.0

2005

7.6

1988

7.8

1954

8.4

2005

6.3

1972

7.1

2023

0.0

2003

7.1

2003

6.7

1929

7.4