2017

4.9

1992

6.8

2017

6.7

2008

7.0

1999

6.1

1964

7.0

2005

5.9

1995

7.3

2007

6.7

1996

6.9

2001

5.8

1931

5.0

2019

7.7

1983

6.6

1973

3.3

1980

6.1

2004

5.7

2002

6.1

2004

4.8

1996

6.3