1993

5.5

2021

6.2

2003

5.8

1969

6.4

2010

6.5

2009

5.5

2005

4.0

2002

6.6

1969

5.8

2013

7.2

1973

7.2

1953

5.0

1974

5.2

2014

8.0

2003

5.0

1985

6.1

2021

8.2

1979

4.7

2015

5.1

2011

5.3