2018

5.6

1991

7.0

2020

5.2

2021

7.8

2005

4.6

1972

6.2

2020

7.0

2017

6.9

1997

6.2

2016

7.3

2013

6.0

2018

5.9

2008

7.5

2003

6.3

2014

5.7

1998

6.2

2008

5.2

2000

7.7

2007

7.0

1987

6.3