Yes, but have a look at aging condition: 25°C +-3°C! Aging looks much different, when temperature increases and if humiditiy is high. Also, only aspects of 'nominal' aging are taken into consideration. If drive level is increased well above 1mW, then much more unsane effects play a role. Then even catastrophic failure can take place after some months! Do you know actual drive level of your quartz...

Kai