2007

6.6

1996

6.4

2001

7.3

2016

4.5

1988

6.3

1986

6.1

2005

5.3

2003

5.9

2017

6.9

2007

4.0

2002

6.8

2023

7.2

2015

7.5

2008

6.0

2005

4.9

1970

7.1

1964

7.1

1972

3.0

2005

3.6

1984

4.8