2006

6.1

2009

6.0

1985

7.5

1988

6.6

1998

6.4

2009

6.2

1971

7.0

1996

4.8

1999

4.6

1985

6.5

1982

6.9

2011

6.2

2017

4.1

2005

9.0

1968

0.0

2017

5.2

2016

4.5

1993

5.0

1986

7.0

2019

0.0