Question: How long did the Great Irish Famine cause a population decline in the country of citizenship of Ride On's performer?

<P0-S0> The population of England rose rapidly during the 19th and 20th centuries whereas the populations of Scotland and Wales have shown little increase during the 20th century, with the population of Scotland remaining unchanged since 1951. <P0-S1> Ireland for most of its history comprised a population proportionate to its land area (about one third of the total population). <P0-S2> However, since the Great Irish Famine, the population of Ireland has fallen to less than one tenth of the population of the British Isles. <P0-S3> The famine, which caused a century-long population decline, drastically reduced the Irish population and permanently altered the demographic make-up of the British Isles. <P0-S4> On a global scale, this disaster led to the creation of an Irish diaspora that numbers fifteen times the current population of the island. <SEP> <P1-S0> Listen is an album by Irish folk singer Christy Moore, released in Ireland on 17 April 2009 by Columbia Records. <P1-S1> Recorded with long-time accompanist Declan Sinnott, it is his first studio album since 2005's "Burning Times". <P1-S2> The album debuted at number one on the Irish Albums Chart. <SEP> <P2-S0> during periods of unemployment, there has been a long pattern of emigration from the island since the post-napoleonic period. <P2-S1> the majority of "saints" emigrated to the uk, south africa and in the early years, australia. <P2-S2> the population has steadily declined since the late 1980s and has dropped from 5,157 at the 1998 census to 4,255 in 2008. in the past emigration was characterised by young unaccompanied persons leaving to work on long-term contracts on ascension and the falkland islands, but since "saints" were re-awarded uk citizenship in 2002, emigration to the uk by a wider range of wage-earners has accelerated due to the prospect of higher wages and better progression prospects. <SEP> <P3-S0> the great depression was a severe worldwide economic depression that took place mostly during the 1930s, originating in the united states. <P3-S1> the timing of the great depression varied across nations; in most countries it started in 1929 and lasted until 1941. it was the longest, deepest, and most widespread depression of the 20th century. <P3-S2> in the 21st century, the great depression is commonly used as an example of how far the world's economy can decline. <SEP> <P4-S0> Ride On is an album by Irish folk singer Christy Moore, released in 1984. <P4-S1> Its title track remains one of his most popular songs. <P4-S2> A number of songs relate the actions of those involved in political struggles, or those affected by those struggles; such as "Viva la Quinte Brigada" which is concerned with the Irish contingent amongst the International Brigade in the Spanish Civil War; or "El Salvador" dealing with the civil war in that country in the 1980s. <P4-S3> Other songs deal with Irish history – "The City of Chicago", about emigration to America during the Irish famines of the late 1840s; "Back Home in Derry" written by Bobby Sands about the transportation to Australia of convicts; and "Lisdoonvarna" celebrating a music festival that took place annually in that town until the early 1980s.