2019

8.9

2019

8.5

2012

7.4

1991

5.9

1997

8.4

1977

8.2

2013

7.5

2017

7.2

2007

7.3

2015

7.7

1991

7.3

1994

8.7

2009

7.6

2002

8.4

2013

6.9

1954

8.4

2019

7.7

2014

8.5

1984

7.3

1960

8.4