1996

7.5

2013

8.7

2020

7.7

8.0

1988

7.3

1979

5.0

2018

6.8

2021

5.5

1951

5.3

2016

8.0

7.0

2014

6.9

1937

5.7

2002

9.6

1986

6.0

2020

10.0

1993

6.2

2020

6.8

1967

6.2

2005

6.7