1994

8.3

2000

7.9

2007

7.0

2009

0.0

2008

6.9

2008

7.0

2007

7.2

1968

7.6

1978

7.5

2015

7.0

1980

6.8

2023

0.0

1956

7.6

1961

7.2

2017

0.0

1990

6.6

2007

6.1

2002

7.3

1949

6.1

2008

6.3