2017

6.5

1994

6.3

1971

6.1

6.4

1975

4.5

1992

6.2

2010

7.3

2014

6.5

2004

6.0

1967

6.6

1968

6.4

2004

6.0

2014

7.0

2023

8.4

2013

7.8

2015

6.0

1969

6.6

2004

6.9

1980

6.2

1977

5.9