Complex sentence: An average of 25,286 fans watched CFL games in 2014, however this figure has been depressed during the middle of the decade by short-term issues, most notably the lack of stadium availability in Toronto and Hamilton.
Split into simpler sentences: An average of 25,286 fans watched CFL games in 2014. CFL attendance has been depressed during the middle of the current decade by short-term issues, most notably the lack of stadium availability in Toronto and Hamilton.