2018

6.2

1977

5.9

2020

5.8

2009

7.6

2006

5.5

2018

0.0

1982

7.9

1979

6.5

0.0

2003

6.2

1999

7.0

10.0

2004

6.9

1990

4.4

1983

7.1

1968

8.1

1976

6.5

1974

5.9

2013

0.0

2021

7.5