1996

7.5

2016

6.4

2023

7.1

1994

7.8

2014

6.3

2004

8.6

2000

8.5

1984

7.5

2009

8.0

2010

7.9

1996

7.8

2009

7.6

2011

6.7

1993

8.4

2003

7.5

1990

6.9