The police said crime in the park had decreased by 24 percent so far this year, compared with 1996.
The city's crime rate also decreased by 45 percent in 2011.
Since 2000, the population has decreased by almost 3 percent.
The average price per room also decreased - by 9 percent, to $136.59.
The number of classes a year has decreased by 75 percent.
Since then, the amount of birds killed have decreased by about 40 percent.
In that same period, the department's budget decreased by 7 percent, to $4.2 million, the report states.
Its population has decreased by 13 percent from 1999 to 2000.
The number of sales decreased by 25 percent to 135 from 180.
Between 1920 and 1930, the town's population decreased by 24 percent to 2,292, the lowest number since the 1780s.