1990

6.1

1989

5.5

2024

9.9

2011

7.5

1999

5.7

1952

6.7

1973

9.2

2017

6.9

2002

6.5

1988

6.4

2009

8.8

2013

6.5

1959

6.1

2014

6.3

1975

6.8

2003

6.8

1989

6.1

1991

4.7

2007

7.3

2006

6.6