2006

6.6

1989

7.0

2003

6.7

1990

6.1

1994

7.9

2018

6.7

2015

6.8

1993

7.6

1962

7.3

2018

7.5

2007

7.2

2020

7.4

1999

8.0

1998

6.9

2015

6.4

2011

5.5

2012

6.2

2011

7.2

2015

6.2

1982

6.4