- 2024 – 38.3%
- 2019 – 14.43%
- 2014 – 25.86%
- 2009 – 25.55%
- 2004 – 18.57%
- 1999 – 11.93%
- 1998 – 30.06%
- 1996 – 40.94%
Data Stories
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