2013

6.1

1982

4.4

2017

5.2

2008

5.7

2018

6.5

1989

9.2

1987

7.0

2000

6.3

2017

4.9

2014

7.6

1971

7.4

2008

6.0

2020

5.3

1995

5.4

2009

7.3

1923

6.8

2017

6.8

2015

6.6

1987

6.0

2020

6.2