1968

6.2

1959

7.9

1994

8.3

2002

7.1

2005

7.4

1932

7.8

2004

7.4

2017

4.6

2018

4.7

1999

3.7

1995

6.4

1992

6.9

2005

6.3

1963

8.1

1998

6.8

2006

6.9

2004

5.7

2003

7.4

1996

6.8

2001

6.2