2001

6.1

2012

5.4

2004

7.1

1999

8.0

2018

6.0

1966

7.9

1978

6.8

1970

6.2

2005

5.9

2014

5.3

1981

7.2

1995

5.6

1970

7.3

1990

7.0

2012

7.3

1977

6.9

2011

7.7

2006

5.3

1944

7.6

1966

7.7