2005

6.6

2012

7.1

2025

7.5

2021

5.4

1959

8.0

2015

7.8

2004

7.3

2009

6.3

2000

6.3

2008

5.7

1978

6.9

2011

6.4

1994

7.4

1985

7.0

2009

7.8

2001

7.8

1994

8.5

2002

7.1

2017

7.3

1958

7.4