San Francisco Street Cleaning Tickets & Revenue - By the Numbers

How many street cleaning tickets are issued each year in San Francisco?
How much revenue is generated each year from street cleaning tickets in San Francisco?

The answers to these questions and more below. 

In 2008 the SFMTA changed from cleaning most streets every week to just every two weeks as a "cost saving measure". In 2007 the SFMTA issued 664,390 street cleaning tickets at $40 each, worth $26,575,600 in revenue. In 2012, the SFMTA issued 520,589 street cleaning tickets at $62 each, worth $32,276,518 in revenue. Begs the question, was the change in policy aimed at reducing costs or as justification to raise ticket prices to increase in revenue?

520,589 - Street Cleaning Tickets Issued in 2012
$32,276,518 - Value of street cleaning ticket revenue in 2012 ($62 per violation)
$64 - Cost of a street cleaning ticket in 2013, a $2 increase from 2012.  
$40 - Cost of a street cleaning ticket in 2008
60% - Increase in the cost of a street cleaning ticket from 2008 to 2013. 
$20,823,560 - Value of 2012 street cleaning revenue if the city had kept the ticket rate at $40, the 2008 level.
$11,452,958 - Additional revenue generated by the SFMTA due to increasing the street cleaning ticket fines from $40 in 2008 to $64 in 2013.   
2008 - When the SFMTA changed from cleaning most streets every week to every two weeks.