1998

8.2

2017

7.4

1997

4.3

1967

6.4

2016

6.2

2002

6.6

1998

6.4

1986

6.9

2003

6.9

1996

6.5

1997

6.5

2014

6.7

2001

6.2

0.0

2015

6.0

1994

8.5

1979

8.3

2016

6.3

2021

7.7

1988

4.4