1927

8.1

1985

8.3

2008

4.0

1989

6.3

2004

6.9

2005

6.5

1997

5.6

2016

6.8

1996

6.9

1992

5.3

1958

7.0

1997

5.4

2006

0.0

1953

0.0

2018

5.9

2007

5.8

1925

5.0

1960

7.3

1990

7.7

1989

7.8