2020

5.0

2007

7.6

2015

7.5

2005

6.2

2016

6.9

1994

6.8

1990

6.9

2016

8.0

2018

8.3

1997

7.3

2017

7.1

1976

6.7

2013

8.1

1999

7.0

2000

8.1

1964

7.4

2015

8.1

1998

6.9

2015

7.2

2016

7.1