1989

6.3

1993

7.7

1994

5.3

1996

4.8

1995

5.8

1989

8.3

1990

0.0

2005

4.8

1974

5.2

1982

7.0

1997

7.6

2013

6.2

1971

6.0

1994

2.5

2018

0.0