2002

7.3

2005

6.8

1998

6.6

2005

6.8

2005

7.0

1996

7.0

1985

8.3

1993

6.5

1993

7.7

1997

5.7

2003

7.2

2002

6.2

2002

6.3

2005

6.0

2017

7.7

1998

7.1

1997

5.6

2015

7.8

1996

5.2

1997

6.7