2010

6.7

2013

8.0

2015

7.6

2014

6.8

2011

8.5

1971

8.1

2014

7.6

1963

5.7

2000

7.6

1994

7.6

1987

7.8

2002

6.8

2003

7.7

1987

7.7

2014

7.3

1982

7.6

2015

7.5

2022

6.8

2018

7.6

2015

7.0