2019

8.7

2001

7.8

2011

7.6

2004

5.9

2008

8.9

1969

8.2

1988

8.0

2011

8.5

1999

8.4

1985

7.7

2012

6.3

2015

8.2

1990

6.9

2006

8.6

2010

7.6

2016

7.8

2023

7.6

2008

7.6

1999

7.9

1998

7.1