1953

7.2

1999

6.6

1993

6.5

2014

7.0

2019

6.5

2022

7.0

1991

6.2

2006

6.7

1975

6.4

2009

7.7

2013

6.7

1998

6.0

1965

6.3

2011

6.6

2011

7.5

2016

6.5

2019

6.5

2011

6.6

2021

6.1

2007

7.7