“…Despite the difficulty in interpreting results, many analyses employ linear regression models (see Table 1) and take a geographical focus on countries from Europe (Charitou et al, 2010;Deloof, 2003;Garcıa-Teruel and Martınez-Solano, 2007;Koumanakos, 2008;Losbichler et al, 2012;Sen and Oruc, 2009), Asia (Alipour, 2011;Gaur and Bhattacharya, 2011;Sharma and Kumar, 2011;Vishnani and Shah, 2007;Wang, 2002) or the United States (Cannon, 2008;Capkun et al, 2009;Gill et al, 2010). Most of these analyses consider a time horizon of up to ten years, while Capkun et al (2009), Gaur andBhattacharya (2011) and Sen and Oruc (2009) evaluate developments over a longer time period of up to 25 years.…”