1991

5.7

2012

6.1

2020

6.4

1957

7.2

1994

7.7

1988

5.9

1953

4.8

2000

6.4

1980

6.6

2013

7.7

2024

6.8

1998

6.1

2006

7.0

2014

6.5

1958

5.6

1999

8.0

2016

5.9

2002

7.5

1955

7.2

2012

5.3