2013

3.8

2023

5.8

2022

6.7

2021

5.0

1988

5.0

2015

4.7

1990

4.9

1979

6.4

1973

5.7

1972

6.1

1971

6.6

1970

8.0

2023

0.0

2022

5.0

2006

5.9

2007

5.8

2003

6.1

2005

6.8

2002

6.1

1973

5.2