1999

8.0

1974

7.0

2016

7.8

1997

6.8

1990

7.2

1989

7.2

1985

6.6

2015

7.4

1980

6.7

2023

7.0

1971

7.7

1999

5.1

2012

7.6

1980

8.4

2010

5.9

2013

6.1

1994

7.5

2009

4.6

2013

7.0

1994

8.5