Smoothed curves for both events/week ( Figure 1 ) and events/month ( Figure 2 ) demonstrate a decreasing trend over time, with the frequency of events being relatively stable during the period 2010 to 2013.
1
—
—
Smoothed curves for both events/week ( Figure 1 ) and events/month ( Figure 2 ) demonstrate a decreasing trend over time, with the frequency of events being relatively stable during the period 2010 to 2013.