How many people will get stabbed at the Notting Hill Carnival this year?

Sunday and Monday sees the Notting Hill Carnival take place in London. Every year without fail sees multiple stabbings as well as a whole range of arrests for various crimes.

So predictions please. How many stabbings will there be?
www.met.police.uk/.../
How many people will get stabbed at the Notting Hill Carnival this year?
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This year there were 5 stabbings and 3 slashes. So let's call it 8
How many people will get stabbed at the Notting Hill Carnival this year?
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