1968

6.1

2013

3.5

2016

6.7

2018

6.1

1987

6.5

1961

4.3

1972

7.5

2007

6.2

1962

6.9

2005

6.8

2007

6.2

2017

3.6

1995

7.2

1980

5.5

1976

7.3

2015

5.5

1994

6.6

2009

6.8

1981

3.3

1972

5.8