1986

6.8

1969

6.4

1990

6.0

1982

5.4

2014

6.8

2003

6.1

2008

7.5

2021

7.7

1998

6.0

2013

6.6

2020

6.0

2010

6.9

2010

5.5

2021

7.5

2009

4.6

1974

6.3

2006

7.4

2002

5.8

2001

5.9

2009

7.5