2004

6.6

2000

7.4

2005

5.5

2016

6.4

2011

6.9

2016

6.6

2017

6.6

2019

5.4

2013

6.6

2013

5.9

2015

6.0

2009

7.1

2005

7.2

1996

6.3

1987

7.2

2021

6.3

1977

0.0

1929

0.0

2010

6.1

2018

7.2