2005

6.7

1986

7.6

2006

5.6

1995

8.4

2000

8.1

2004

7.2

1958

7.4

1993

5.6

2005

7.0

2002

7.6

2013

6.0

2014

5.5

1996

3.9

2016

7.0

2018

5.7

2002

7.0

1999

6.8

1980

7.9

1948

7.9

2004

6.6