1989

7.0

5.0

1990

6.1

2015

6.4

2021

6.2

1979

10.0

1941

6.0

2018

8.1

1987

7.5

2000

6.7

1995

6.7

1987

5.5

2006

6.6

2021

7.1

2018

7.5

2009

7.3

1975

7.9

2007

5.7