1988

5.0

1996

5.7

1982

7.6

2002

6.2

1991

4.4

1986

7.0

2005

4.5

1987

0.0

1979

6.7

1986

7.1

1992

5.9

1994

5.3

1978

4.4

2014

6.0

1990

7.5

1981

0.0

2015

0.0

2000

6.7

1999

8.7

2018

5.2

2003

5.5