1966

7.1

2006

6.1

2007

6.1

2003

6.2

2014

6.2

1991

6.7

1974

7.0

2007

5.3

1994

6.0

1987

6.4

2002

7.9

1989

6.3

2004

6.4

2000

7.2

2021

6.3

2002

5.8

2007

7.2

1913

0.0

2020

8.2

2011

5.5