2016

6.7

2017

6.7

2001

7.6

2006

5.4

1998

5.4

2002

6.6

2001

6.3

2018

4.5

2020

6.1

1999

6.8

2003

6.2

1984

6.1

2000

5.7

2016

6.7

2015

5.9

1993

7.5

2018

4.6

2004

6.0

1962

7.3

2010

8.2