Can we draw the following hypothesis from the context? 

Context:

How to hoard food for an emergency<br>Make sure you have at least £ 300/$490/342 euro's (these are equivalent as of the seventh of may , 2011). Go to a shop that sells canned foods and drinks. Tinned and dried foods are best, as they last for a long time.

Hypothesis: The currency conversions that were mentioned were relevant as of the autumn of 2011.