1987

7.0

1991

6.8

0.0

2014

7.8

2018

0.0

1990

7.4

2001

7.6

1999

7.9

1984

7.5

1989

8.3

1993

8.0

1985

0.0

2009

7.6

1994

6.6

1999

7.9