What are the trends in Data Science and Big Data ?

Google trends is a good tool to search and explore what people are interested in around the world. I used the tool in the area of big data from 2004 until now, and found that the terms "big data", "business analytics" and "Hadoop" are growing up (in terms of number of searches on Google), while "Data Mining" and "Business intelligence" are decreasing. "Data Science" globally seems to be stable.