Data has evolved significantly over time from being stored on stone to now being stored digitally in massive quantities. By 2020, there will be over 5,000 GB of data generated for every person on Earth. As data continues to grow exponentially, it is important to make data more visual and human-centered by using tools like graphs, charts and tables to help people understand and use data effectively. Big data presents both huge opportunities and challenges for businesses, with the market for big data solutions expected to reach $16.9 billion by 2015.