Interest in the visual arts all around the world has exploded over the past 20 years. There are more people collecting art now than at any other period in history, and they are collecting from a wider spectrum of artists and mediums.
Twenty years ago the number of people who went to galleries or auctions and purchased works of art was very small, and, on average, these people spent a lot of money on what they bought e.g. $20,000-50,000. In the last decade the number of people collecting art has grown though, on average, they are spending less.