1928

7.0

2014

4.6

1999

6.6

2001

5.2

1986

7.7

1973

7.9

2019

5.8

2012

5.0

2016

6.5

2017

8.1

2016

6.8

1985

7.7

2003

7.2

2011

7.1

2011

6.4

1985

6.2

2018

7.5

2017

5.6

2017

7.1

2000

5.3