cats=dict((x, events.count(x)) for x in events)
fig=plt.figure()
fig.suptitle("HEALTH records", fontsize=15, fontweight='bold')
ax=fig.add_subplot(111)

ax.set_title("Number of records {0}, collected on {1} animals".format(len(events), len(anims)), fontsize=10)

ax.bar(range(len(cats)), cats.values())
plt.xticks(range(len(cats)), cats.keys())
locs, labels = plt.xticks()
ax.set_xlabel("Health codes")
ax.set_ylabel("Counts")
plt.savefig("HEALTH records {0}.png".format(pop))
plt.clf()