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Christopher Ragan, "Canada's Looming Fiscal Squeeze," November

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Some Basic Demographic<br />

Projections<br />

During any given year, a country’s total population will increase if the number of births plus net immigration<br />

exceeds the number of deaths. Any isolated change in the birth rate, the net immigration rate or the death<br />

rate tells us not only how the population will grow but also, depending on which rate is changing and by how<br />

much, how the average age of the population will change. In particular, changes in the birth rate have a clear<br />

effect on the population’s average age. An isolated and sustained increase in a country’s birth rate will not<br />

only increase the population growth rate but, since people are always born at age zero, it must also decrease<br />

the average age of the population. Conversely, and more importantly for Canada’s future, a sustained decrease<br />

in the birth rate reduces the population growth rate and increases the average age of the population. Here we<br />

focus on the changing age structure of the Canadian population and the roles played by declining fertility and<br />

rising life expectancy.<br />

Declining Fertility, Rising Life Expectancy<br />

As Figure 1 shows, Canada’s population growth rate has been declining significantly for the past sixty<br />

years. In the two decades immediately following the Second World War, Canada experienced a significant<br />

Canada’s baby declining boom, population when growth the average rate. 1950 - 2040 fertility rate in Canada was 3.6 children per woman. In subsequent decades,<br />

however, the birth rate in Canada declined significantly. by 2007, Canada’s fertility rate had dropped to<br />

about 1.7 children per woman (oeCD 2010).<br />

Figure 1<br />

ANNUAL PERCENTAGE CHANGE<br />

CANADA’S DECLINING PoPuLATIoN GRoWTH RATE<br />

(1950 - 2040)<br />

4<br />

3.5<br />

3<br />

2.5<br />

2<br />

1.5<br />

1<br />

0.5<br />

0<br />

1950<br />

1956<br />

1962<br />

1968<br />

1974<br />

1980<br />

1986<br />

1992<br />

1998<br />

2004<br />

2010<br />

2016<br />

2022<br />

2028<br />

2034<br />

2040<br />

Source: Statistics Canada, medium-growth projection. The 1971 observation is omitted<br />

due to a level change in the definition of the series.<br />

Canada’s population<br />

growth rate has<br />

been declining<br />

significantly for the<br />

past sixty years.<br />

Figure 1 also shows that under Statistics Canada’s medium-growth projection, Canada’s population growth<br />

rate is projected to decline gradually over the next few decades, driven mostly by the stability of the fertility<br />

rate at its current low level. 1 For a developed country like Canada, a stable population without immigration<br />

1 The medium-growth projection is based on the following assumptions: the fertility rate remaining constant at 1.7; life expectancy reaching<br />

84.0 years for males and 87.3 years for females by 2036; and a constant national immigration rate of 0.75 percent of the population.<br />

2011<br />

9

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