2000

4.8

1996

7.2

2004

6.9

2006

6.9

1971

6.6

2005

7.3

2007

6.8

2002

6.4

2008

6.7

2000

5.1

2008

6.5

2014

4.2

1995

7.0

2017

5.6

1993

5.3

1982

6.0

1999

7.4

2022

6.3

1991

7.2

2023

7.6