Interest in "Conservation" and "Environment" declining?

Graph: Interest in "Conservation" and "Environment" decliningAccording to Google the number or searches for the terms "Conservation" and "Environment" have been in a steady decline since 2004.

Does this mean people care less about these issue now than in 2004? Sadly this seems like it is probably the case. See this graph from Google below - blue=conservation, red=environment (see graph at Google here)