I believe the lather that there should be gun restriction because modern weapons have become 100 times more accessible today than in the past. It is fundamental to understand that guns are not the problem itself but the power lies in the individual who can use that gun for dangerous, threatening reasons. So Yes gun restriction is necessary because every person isn't capable of using a gun properly.
These factors are considered when determining the rate of natural increase. birth death emigration immigration user: when determining the "projected population change," a negative percentage indicates the population is expected to decline.