1998

7.0

1995

4.3

2011

5.6

1987

4.1

2020

7.7

2006

5.7

1954

6.5

1976

5.8

2010

7.1

1978

4.6

2015

7.3

1964

4.5

2016

6.3

2014

4.6

2001

4.3

2013

7.5

1953

6.8

2015

5.9

2011

7.0

1997

0.0