1987

7.3

2019

0.0

1986

4.0

1996

8.1

2001

8.1

1999

7.1

1993

5.8

6.7

1993

7.7

1982

6.9

2001

8.5

1983

5.2

2006

6.1

2000

6.2

2005

7.4

1991

7.8

1992

6.7

2002

8.2

1959

0.0

1984

7.4