1968

7.6

2001

5.1

1988

7.1

1970

2.0

2012

4.4

1993

7.8

2002

5.6

2003

7.8

2019

6.9

2004

5.5

2009

7.5

1976

5.7

1989

3.1

1975

5.5

1989

5.0

1996

2.0

2023

7.2

2013

6.7

1999

4.8

2000

3.7