1989

7.3

2000

7.2

1989

9.2

2004

5.8

2016

5.9

1973

7.3

1992

5.0

1970

6.3

1977

7.6

1969

7.1

1980

7.0

1987

7.6

1968

7.5

2022

4.5

2003

6.1

2017

6.0

1982

6.7

1923

7.5

2008

7.0