2009

8.5

2005

7.7

2004

7.1

2009

7.9

1985

6.6

2013

6.1

2005

5.8

1920

6.4

1998

6.4

1989

5.1

2020

7.4

1973

6.5

1989

7.2

1959

7.3

1990

7.5

1978

7.4

2003

7.0

2023

6.3

2011

6.7

2023

6.1