1997

7.3

2014

8.5

1996

6.4

1995

8.1

2001

6.6

1967

7.4

1991

7.8

2001

5.8

2002

6.7

2012

0.0

2009

6.2

1995

7.1

1986

8.0

2002

7.4

2006

7.3

2002

8.1

2012

7.1

2012

5.0

1990

10.0

2018

6.2