1991

7.4

2006

6.7

2013

1.7

2004

5.2

1967

6.9

1970

3.8

2014

4.8

2013

6.2

2006

6.0

2005

5.0

1995

6.5

2024

5.9

2024

6.0

1999

4.6

2003

4.0

2025

5.8

2015

6.5

2002

4.8

1969

4.6

2019

4.6