1998

6.6

2016

5.3

2003

7.0

2021

5.0

1992

6.9

1938

7.3

1963

6.2

2016

5.0

1990

7.4

1992

6.8

1983

7.2

2014

5.1

2012

4.6

1953

7.7

1960

8.2

2013

5.4

2013

5.2

2013

5.7

2013

6.4

2013

5.2