Poli encounter rates

Polis encounter rates :

In Ecruteak :

Poliwag :
	* lv15 : 89/256 * 30% = 10.43%
	* lv16 : 76/256 * 30% = 9.25%
	* lv17 : 51/256 * 30% = 5.97%
	* lv18 : 26/256 * 30% = 3.04%
	* lv19 : 14/256 * 30% = 1.64%
	* lv20 : 89/256 * 60% = 20.85%
	* lv21 : 76/256 * 60% = 17.81%
	* lv22 : 51/256 * 60% = 11.95%
	* lv23 : 26/256 * 60% = 6.09%
	* lv24 : 14/256 * 60% = 3.28%
Poliwhirl :
	* lv20 : 89/256 * 10% = 3.47%
	* lv21 : 76/256 * 10% = 2.96%
	* lv22 : 51/256 * 10% = 1.99%
	* lv23 : 26/256 * 10% = 1.01%
	* lv24 : 14/256 * 10% = 0.05%