2009

3.8

1951

7.6

1991

7.3

1996

7.4

1978

6.6

2013

1.0

2004

1.0

1993

6.4

2005

6.8

1997

6.6

2005

7.7

1999

5.6

2001

6.7

1978

3.0

1991

0.0

1990

5.7

2000

6.1

1999

6.3

2016

5.6

1972

7.3