2007

7.7

2020

6.9

1993

6.2

2002

8.3

1984

7.0

1968

6.9

2012

6.0

1995

5.7

2011

7.4

2013

8.0

1950

6.7

1921

6.8

1966

7.7

1996

5.3

2001

8.9

2009

7.5

2013

6.1

2002

10.0

1960

6.3

2017

8.2