2004

7.9

1977

7.1

1997

8.4

1970

7.5

2005

7.7

2001

6.4

2015

7.8

2013

6.3

1979

6.9

1979

7.4

1996

7.2

2002

8.4

1993

8.6

1987

7.6

2015

6.0

1962

0.0

2017

6.0

2023

6.9

2007

6.2

1963

0.0