2005

6.8

1999

6.2

1956

7.1

2001

4.8

1940

4.4

1946

6.0

2017

7.4

1940

6.3

2006

7.2

2004

7.1

1998

7.2

1988

7.5

2001

6.2

2019

7.0

2018

7.5

1987

5.5

1989

6.6

1951

5.7

2017

6.9

1964

6.1