1997

4.8

1993

7.1

2008

6.1

2008

5.2

2014

7.2

1996

6.9

2002

5.9

2004

7.5

1999

7.7

2006

6.0

2002

6.3

2024

0.0

2014

6.6

2024

0.0

2007

6.5

2013

7.6

2007

6.6

2020

6.8

2006

7.1

1960

8.0