2002

6.6

2010

6.8

2014

5.7

1999

6.5

1995

7.7

2005

7.4

1956

7.5

1992

6.4

1965

7.4

2004

6.0

1990

7.0

2007

7.9

1990

6.1

2007

6.7

2005

5.7

1984

6.3

1985

7.5

2021

7.2

2015

7.8

2014

7.0