Extract the year that the Volvo XC40 was released.

The Volvo XC40 is a subcompact luxury crossover SUV manufactured by Volvo Cars.[9] It was unveiled on 21 September 2017 as the smallest SUV model from Volvo, below the XC60. Orders started in September of 2017, and manufacturing began in November 2017. It was introduced with conventional petrol and diesel engines, with a plug-in hybrid model being introduced in 2019, and a battery electric vehicle model was released in 2020 as the XC40 Recharge. A version of the battery electric model with a sloping rear roof was released in 2021 as the C40 Recharge.

The XC40 was released in the year 2017.