You can refer to your statistics from My websites then Statistics. A drop-down menu on the top left will enable you to choose a customized period (for instance, from the date of creation of the website).
You will find more detailed information in the guide on Traffic analysis for your website.
In order to get more statistics, and, for quicker searches, we advise you to create your own Analytics account, in just a few clicks, by following the instructions of the Statistics tab. Next login into your account: you can then select one of your already created configurations or create a new one. If you haven’t created any configuration yet, a new configuration will automatically be created. Afterwards, you will be able to directly access your latest website statistics. You will find more detailed information in the Install Google Analytics on your website guide.