2017

6.9

5.7

2019

5.8

2015

6.0

2010

7.7

2003

6.6

1966

7.1

2018

5.9

1998

5.2

1952

7.0

2017

8.1

1994

6.5

1962

7.3

2019

6.5

1992

5.4

1969

6.0

2009

7.1

2009

4.8

1970

4.6

2008

6.2