1997

7.6

2000

6.4

10.0

2002

6.5

2018

7.3

1965

7.5

1950

6.7

2020

0.0

1959

0.0

2004

7.3

1969

7.1

2014

7.9

2021

0.0

2020

0.0

1989

6.2

6.7

1993

0.0

1993

7.2

2017

0.0

1998

7.0