1988

5.8

1999

5.1

2014

7.6

2012

6.5

1996

7.2

1967

7.1

1970

7.7

2013

6.0

1982

6.8

1996

8.1

1970

6.7

2003

6.9

2015

5.4

1996

5.3

2023

10.0

1975

4.5

1999

7.3

2018

5.8

1986

5.6

2016

5.3