18 See also D’Amuri, F. and J. Marcucci (2012), “The predictive power of Google searches in forecasting  unemployment”, Bank of Italy Working Paper No 891. 19 See Algan, Y., E. Beasley, F. Guyot, K. Higa, F. Martin and C. Senik (2016), “Big Data Measures of Well-Being:  Evidence from a Google Well-Being Index in the United States”, CEPREMAP Working Paper No 1605.
20 See also Gil, M., J. Pérez, A. Urtasun and A. Jesus Sánchez (2017), “Nowcasting private consumption: traditional  indicators, uncertainty measures, and the role of internet search query data”, 61st ISI World Statistics Congress, Marrakech, 18 July; Verbaana, R., W. Bolt and C. van der Cruijsen (2017), “Using debit card payments data for nowcasting Dutch household consumption”, DNB Working Paper No 571; and Galbraith, J. and G. Tkacz (2015), “Nowcasting GDP with electronic payments data”, ECB Statistics Paper Series No 10.