2017

6.0

1991

6.8

2013

6.1

1961

7.7

2002

5.2

1998

6.0

2002

7.5

2004

5.7

2006

6.6

1989

6.9

2016

3.7

1997

6.4

1985

6.2

1970

7.0

2020

7.5

2010

6.5

2014

6.5

1964

7.9

1943

7.5