What is the meaning for not earlier than 2011?

The phrase "not earlier than 2011" indicates that a specific event, condition, or timeframe cannot occur before the year 2011. This means that the earliest possible date for that event is 2011, allowing for the possibility of it happening in that year or any subsequent year. It establishes a clear starting point in time, emphasizing that anything prior to 2011 is not relevant to the context in question.