1955

7.2

2002

5.7

1958

7.6

1998

6.1

1999

8.0

1943

5.9

2007

5.4

2000

4.9

1996

5.8

1971

7.1

1974

5.8

2015

6.1

2003

5.3

2014

5.0

1999

5.9

1998

6.0

1990

6.5

1982

6.7

2004

5.9

1888

5.9