2005

9.0

2015

5.8

1960

6.8

1991

6.1

1978

5.8

2016

7.5

1943

7.2

2003

5.0

2014

5.1

1977

6.6

2017

6.4

1999

5.8

2001

5.6

2003

6.7

2008

5.2

1963

6.9

2000

6.5

2002

6.4

1995

7.0

2019

4.6