2009

4.7

2007

4.6

2003

4.4

2021

3.3

2016

4.3

2008

4.2

2003

3.8

1996

5.5

1993

5.2

1981

4.1

1976

6.3

2019

5.7

2003

4.5

2017

4.7

1980

6.3

2002

3.1

1978

5.3

1989

6.0

2022

5.2

1979

1.5