1961

6.3

2009

2.9

1998

5.9

2023

9.0

1996

4.8

2010

5.8

2000

5.8

2009

5.8

2013

5.4

1968

1.0

2014

6.0

1994

8.5

1999

5.4

1992

5.0

2023

10.0

2010

5.9

2015

4.4

2003

4.9

2005

5.2

2021

4.0