The following graph plots the prices (in US$) of all items listed in the Antique Map Price Record over its 24 year history. Because of the large number of points (113,658), the individual dots form a blur through most of the price range in each year, with just the upper and lower extreme values standing out as individual points. The line drawn between the years shows the median values, which are also listed in the table below. The overall median, across all 24 years is $245.
Because of the extreme range and skewed distribution of the prices (from $3 to $425,000), the Y-axis is plotted on a logarithmic scale.
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