2003

7.3

2010

6.9

1999

7.9

2015

7.5

1966

8.0

2010

7.2

2011

6.8

2002

8.3

2007

7.5

2016

6.5

2019

6.7

2001

7.6

2003

7.2

1994

6.8

2016

7.0

2006

7.7

2013

8.1

1998

7.2

2005

7.9

2002

8.6