2017

6.9

2014

6.9

2017

6.5

2001

6.8

1988

6.3

1990

6.1

2014

7.0

1999

5.9

1985

5.8

1989

6.2

1980

6.4

1966

6.2

2012

7.7

2016

9.7

1993

6.6

1995

5.6

2017

6.6

2022

6.1

1959

6.1

2015

6.1