1983

7.2

2018

7.0

1994

0.0

1997

7.3

1999

7.8

1992

0.0

2005

7.8

1996

8.5

1994

8.2

1975

7.6

2005

7.3

2006

7.7

2014

8.0

1995

7.1

1986

8.0

2002

7.4

2018

6.2

2014

8.5

2002

2.7

1982

7.2