In the Statistic section of the Statistic tab, you must choose to calculate either frequencies or trends.
Frequencies are counts of records. (In the case of summarized records, such as populations, the counts within the records are actually summed.) Row or column percentages may be calculated with frequencies.
Trends are changes in counts over time. They are expressed in 2 forms: the percent change (PC) and the annual percent change (APC).
PC = ((end count - initial count) / initial count) * 100. One- or two-year counts can be used for the initial and end counts.
The APC is calculated by fitting a regression line to the natural logarithm of the counts (c) using the calendar year (x) as a regressor variable, i.e., y = mx + b where y = ln(c). You may also utilize the standard errors of the counts to fit to a weighted least squares regression line.