. . . . . . . . . . . . . "The bike boom or bicycle craze is any of several specific historic periods marked by increased bicycle enthusiasm, popularity, and sales. Prominent examples include 1819 and 1868, as well as the decades of the 1890s and 1970s \u2013 the latter especially in North America \u2013 and the 2010s in the United Kingdom."@en . . . . . . . . . . . . "19836"^^ . . . . . . . . . . . . . . . . . . . . . . . . . "Bike boom"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "The bike boom or bicycle craze is any of several specific historic periods marked by increased bicycle enthusiasm, popularity, and sales. Prominent examples include 1819 and 1868, as well as the decades of the 1890s and 1970s \u2013 the latter especially in North America \u2013 and the 2010s in the United Kingdom."@en . . . . . . . . . . . . . . . . . . . . . . . . . . . "6604694"^^ . . . . . . . . . . . . . . . . . . . . "1109051054"^^ . . . . . . . . . . . . . . . . .