2002

6.8

2014

7.8

2018

8.1

2015

0.0

2018

0.0

2016

5.0

2007

0.0

1986

0.0

1990

7.7

1971

6.6

2009

6.1

1981

5.9

1984

5.8

1977

7.6

2016

6.3

2025

5.7

2023

5.2

2025

6.3

2018

7.0

2017

6.4