2015

7.1

2010

6.7

2016

10.0

2008

5.8

2005

6.7

2004

8.3

1993

6.6

2014

7.5

2001

6.6

1975

5.0

1999

7.4

2023

9.7

2015

7.3

2002

4.8

1967

8.0

2004

7.2

2017

7.4

1973

8.1