5.7

2003

5.3

2001

8.0

2000

9.4

2022

6.9

2009

5.1

1995

5.9

1971

4.7

1972

7.4

2012

7.2

2020

7.0

1993

5.6

1975

6.9

2010

7.9

1968

5.7

2014

6.5

1989

7.0

1966

6.3

2013

7.7