I bought a brand new X5 3.0d and one month later he's gone

.
Last week i parked on a parking lot and two hours later when I came there was nothing.The insurance will pay it out and I must buy another Bmw,but I will install alaram or something.Last year in my town was stolen about 24 X5

in only three months,the police have found some cars in Serbia.
How is it in the USA,are X5 popular by the car mafia?Does anyone know how can someone start the X5 without the car keys

Sorry about my bed english,I'am new here,and I'am from Europe