SEARCH THE INTERNET AND GET ME THE ANSWER

What is the total number of white elephants(albino elephants) across the world ? is my question. search the internet and get me the answer. Answers from question and answer websites like quora, yahoo answers...etc are not accepted, since they all are opinion based answers. Answers only from good websites like wikepedia or from news channel websites or from journals or from books are accepted. You should tell overall white elephants that are not only captured by people, but also those roaming in forests. For example, the total number of tigers in the world is 3000 to 4000(including captured and forests), in the same way you have to tell in the case of white elephants. I already did some google search to get the answer, but i am unable to find the answer. That is why, i am posting here. If you are expert in web search and internet research, then only take this work , otherwise do not take this work.