2015

7.1

2007

10.0

2021

7.2

1986

3.9

2019

7.5

1997

9.3

1992

7.0

1991

4.7

1985

6.2

1972

4.7

2013

3.3

2017

4.5

1952

4.0

2009

5.7

2014

1.0

2010

3.5