2023

8.0

1999

6.3

2013

5.5

1990

5.3

1996

6.0

2000

5.7

2012

6.3

1968

8.1

1983

7.1

1988

6.6

1982

5.8

2007

4.9

2008

8.5

2015

5.9

1999

6.4

2009

4.7

1977

6.6

1981

6.2

2023

6.6

2008

6.4