2020

7.8

1984

7.5

2011

6.1

1995

7.3

2012

7.4

1990

6.9

2017

8.0

2013

6.8

1988

6.5

2000

7.1

1994

6.8

1957

6.9

2003

7.9

1985

7.7

2011

7.5

2014

7.2

1994

7.6

2011

7.6

2008

7.6

2014

6.7