2016

7.6

2002

7.5

1993

7.9

2009

8.3

2014

7.4

1989

7.7

1982

7.1

1969

6.7

2012

6.2

2014

6.8

1998

7.1

1994

7.6

1966

7.6

2016

7.1

1995

7.8

1987

8.4

2007

7.7

1972

7.4

1969

7.3

1989

6.5