2010

4.5

1995

4.2

2014

6.6

2005

4.3

1991

7.2

1985

6.1

2015

5.0

2005

7.3

2010

7.7

2007

6.7

1963

4.0

2000

5.2

2002

6.4

2013

5.7

2005

6.1

2016

5.6

2000

4.8

1984

6.3

1994

4.0

1998

6.3