1988

6.2

1961

7.7

1999

7.6

2023

8.4

2009

7.3

1953

7.2

1933

6.9

2010

6.2

2012

6.3

1973

5.7

2011

6.2

2016

7.0

2015

8.4

1997

7.4

1993

6.4

2014

4.2

2002

7.5

1989

5.6

2000

5.5

2014

6.5