Includes: radio|wireless|tv|sound|gramophone|video|television

Year Number
1890 0 Map
1900 0 Map
1910 0 Map
1921 2 Map
1931 4 Map
1939 8 Map
1950 10 Map
1962 17 Map
1970 18 Map
1978 17 Map
2002 9 Map
2011 3 Map