How many kicks per day should i feel?

Mimikito
I will be 18weeks tomorrow n week ago i started noticing baby kicks.. Today he/she is kicking much more than days before.. Is that normal? I felt (if im not wrong) about 10kicks in 2 hours-laying in bed. Is there anything like too much kicking or is that ok? I dont find anywhere on internet specific number of daily kicks pregnant woman should feel.. 
Thanks for reply