0.0

1989

8.1

1999

7.6

1989

6.1

2009

7.0

1963

7.9

1980

6.5

1992

5.5

2024

7.0

1997

5.8

1986

7.3

2011

6.0

2025

0.0

1989

0.0

2018

4.7

1985

6.5