1987

0.0

1986

7.1

1990

7.4

2023

0.0

1998

7.1

2001

7.8

2001

7.8

1999

7.0

2022

0.0

2006

2.0

2017

6.3

1968

6.9

2013

0.0

1964

6.6

1972

6.9

2002

6.8

1980

7.0

2004

6.0

1994

6.4

1957

8.0