2002

9.1

1977

5.4

1976

5.6

1984

7.2

2008

7.3

1972

7.1

2015

5.9

2021

6.7

2009

5.6

2009

6.2

1973

5.0

2006

6.5

1970

7.1

1994

6.3

2012

5.5

2012

6.0

2020

6.4

1978

5.9

2017

5.0