2011

4.7

1994

6.5

2021

7.2

1999

7.4

2014

5.7

2000

7.9

2019

6.4

2005

7.0

2011

6.7

1995

6.5

1973

7.2

2013

7.2

1999

8.0

2003

7.4

2017

8.1

2001

7.5

1983

7.4

2002

7.3

2015

6.2

2007

6.5