2005

6.2

2013

8.2

2018

8.3

2023

8.6

2004

8.6

1992

6.5

2011

7.3

2002

6.4

1996

5.4

2004

7.0

1975

8.0

2010

6.9

2013

7.4

2015

7.6

1989

7.7

2013

7.5

2018

7.2

1976

6.7

2022

7.7

1985

8.5