1996

6.5

2021

8.5

2010

6.9

2020

4.4

1987

6.0

1997

5.8

2012

0.0

2015

7.6

1995

7.1

1999

7.3

1991

7.1

2014

7.6

2014

6.6

1961

7.3

1992

7.1

2010

7.9

1992

6.5

2011

6.2

2006

6.8

2013

5.0