2006

7.4

2015

6.9

2010

8.0

1996

6.1

2007

7.5

2014

7.6

1995

6.4

2017

5.8

1988

5.2

1990

7.4

2001

7.6

2020

7.0

2003

6.3

2020

6.5

2015

8.2

1996

6.7

1996

7.6

1999

6.8

2013

7.6

2006

8.2

2022

7.8