1955

7.4

2011

9.5

1973

9.2

2010

5.9

1993

6.8

2012

9.7

1952

6.7

1986

5.8

1968

6.6

1989

7.2

2001

6.2

2001

4.9

2025

7.3

2013

8.5

1987

6.9

1956

7.1

1981

6.3

2001

9.9

2015

5.0

2012

5.7