2007

6.9

1981

6.7

2010

6.3

2009

7.4

1968

7.0

2006

5.5

2023

6.2

2013

6.1

1993

7.1

2016

5.7

2015

7.3

2023

9.2

2012

5.6

2009

6.9

1968

7.6

2009

6.6

2016

4.8

2003

6.3

1979

7.3

2015

6.9