1999

6.0

1997

5.6

1997

4.3

1997

3.1

2016

7.3

1990

10.0

1998

6.1

1982

5.6

2014

5.6

1990

6.9

2010

7.6

1986

5.5

2006

6.4

2013

6.3

2001

6.3

2000

5.6

2009

6.0

2005

8.3

1997

5.7

1993

5.1

2009

7.6

1996

7.1

1997

5.5

2006

5.0

2003

7.0

2021

7.5