1988

5.5

1992

5.3

2002

7.4

1986

4.0

1981

6.6

1995

7.7

1994

7.5

2003

7.4

1999

7.7

2015

0.0

2001

8.1

2019

0.0

1979

6.8

1983

5.2

2014

2.0

1999

7.7

1987

7.1

2009

8.5

1984

7.3

1987

7.9