1979

0.0

2003

2.0

2006

6.8

2002

5.9

2007

6.6

1980

0.0

2003

7.6

2001

7.8

1999

7.5

1977

5.5

1955

0.0

2022

2.0

1984

6.1

2014

7.3

2013

7.7

2015

7.8

2015

6.0

2011

7.4

2015

7.2

2018

2.0