2010

7.1

2006

6.4

2015

6.6

2001

6.7

1973

6.2

2007

7.7

1994

7.1

1987

5.3

2011

6.7

2018

6.3

1983

6.5

2004

7.6

1999

8.0

1993

7.5

2021

7.0

1974

7.0

1999

4.6

1970

7.6

2012

7.1

2005

5.7