1954

8.5

2016

5.2

2021

7.2

2015

7.5

2007

6.3

2017

4.1

1984

6.2

1962

8.0

1971

7.4

2000

6.0

1970

4.5

1972

5.5

1996

6.9

2001

6.9

1984

8.0

1998

6.8

2001

8.4

2002

8.4

2003

8.5

2014

6.8