1999

7.4

2018

7.7

2018

7.6

2001

7.2

2010

6.3

2006

5.7

1895

5.5

1971

7.1

2006

6.4

2017

5.9

2020

7.0

2016

6.5

1986

6.5

2018

7.4

2003

5.3

1986

6.8

1997

5.4

2015

6.6

2004

6.9

1985

5.5