1999

6.6

2005

6.8

1985

6.2

1987

5.3

2002

6.0

2000

5.2

2016

7.9

2015

6.2

1999

7.0

2007

6.9

1989

7.0

2019

6.5

1997

7.1

2016

7.0

1996

6.0

1999

5.9

1987

6.2

2008

7.0

1994

6.1

1982

6.7