OK, I am interested, I do note the table says 16+ commuters. Please provide the methods and parameters by which these ESTIMATES were normalized.

Please list the infrastructure with dates opened each year from 1997 to 2004 (pics would be very helpful).

Please provide the crash reporting criteria and changes by year for reporting criteria. As an example, SFPD will not take a report anymore unless the cyclist is taken away in an ambulance. Honolulu Police use to take reports if the damage exceeded $1,000, then it changed to $3,000 and now I believe it is only required if there is an injury or if traffic is blocked. Imagine how those changes in reporting criteria would impact a graph such as yours.