Includes: electric|appliance|comput|machine|camera|mobile

Year Number
1890 1 Map
1900 0 Map
1910 1 Map
1921 2 Map
1931 3 Map
1939 2 Map
1950 2 Map
1962 5 Map
1970 9 Map
1978 12 Map
2002 15 Map
2011 9 Map