1964

7.5

1939

6.6

2006

6.2

2014

5.6

2011

6.1

2008

5.0

2008

8.5

2015

6.5

2014

7.0

2011

7.2

2022

6.2

1988

6.7

1993

5.5

2005

6.8

2007

6.0

2004

6.2

2003

6.9

2001

6.3

2002

6.3

1998

7.4