Table 2 Panel data structure
From: The impact of contactless payment on cash usage at an early stage of diffusion
2009 | 2010 | 2011 | 2012 | 2013 | |
|---|---|---|---|---|---|
Nr. of respondents | 2173 | 2102 | 2151 | 2065 | 2089 |
2009–2010 panelists | 1913 | 1913 | |||
2010–2011 panelists | 1801 | 1801 | |||
2011–2012 panelists | 1926 | 1926 | |||
2012–2013 panelists | 1330 | 1330 | |||
2009–2012 panelists | 1515 | 1515 | 1515 | 1515 | |
2009–2013 panelists | 1132 | 1132 | 1132 | 1132 | 1132 |