2001

6.8

1990

7.3

2001

7.4

1987

6.8

1993

7.1

1991

3.3

1994

7.8

1992

3.0

1992

6.5

1999

4.5

1992

4.7

2014

6.6

1989

8.3

1998

7.1

2002

7.2