1987

7.3

1986

4.0

2001

8.1

1999

7.1

6.7

1993

7.7

1983

5.2

2006

6.1

2000

6.2

2005

7.4

2002

8.2

1984

7.4

2010

10.0

1992

5.3

2002

7.0

2002

7.5

2019

7.9

1997

6.8

1992

6.8

2001

7.6