2007

5.9

1992

5.7

1981

6.6

1986

6.7

2017

6.4

1991

5.2

2016

5.5

1991

6.8

2006

7.3

2007

6.1

1979

5.7

2010

5.8

2003

5.3

2004

7.1

2006

7.0

1982

7.2

2003

5.0

2016

6.1

1992

6.6

1952

7.3