Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Ecclesiastical Jurisdictions | Latin name | Type | Rite | Ecclesiastical Province | Established | Area (km2) |
| --- | --- | --- | --- | --- | --- | --- |
| Benguela | Benguelensis | Diocese | Roman | Huambo | 6 June 1970 | 49,920 |
| Cabinda | Cabindanus | Diocese | Roman | Luanda | 2 July 1984 | 7,120 |
| Caxito | Caxitonsis | Diocese | Roman | Luanda | 6 June 2007 | 25,133 |
| Dundo | Dundensis | Diocese | Roman | Luanda | 9 November 2001 | 103,130 |
| Huambo | Huambensis | Metropolitan Archdiocese | Roman | Huambo | 4 September 1940 | 29,500 |
| Kwito-Bié | Kvitobiensis | Diocese | Roman | Huambo | 4 September 1940 | 71,000 |
| Luanda | Luandensis | Metropolitan Archdiocese | Roman | Luanda | 1596 | 1,074 |
| Lubango | Lubangensis | Metropolitan Archdiocese | Roman | Lubango | 27 July 1955 | 118,000 |
| Lwena | Lvenanus | Diocese | Roman | Saurimo | 1 July 1963 | 199,786 |
| Malanje | Malaniensis | Metropolitan Archdiocese | Roman | Malanje | 25 November 1957 | 107,000 |
| Mbanza Congo | Mbanzacongensis | Diocese | Roman | Luanda | 7 November 1984 | 39,459 |
| Menongue | Menonguensis | Diocese | Roman | Lubango | 10 August 1975 | 213,309 |
| Namibe | Namibanus | Diocese | Roman | Lubango | 21 March 2009 | 57,097 |
| Ndalatando | Ndalatandensis | Diocese | Roman | Malanje | 26 March 1990 | 20,159 |
| Ondjiva | Ondiivanus | Diocese | Roman | Lubango | 10 August 1975 | 83,900 |
| Saurímo | Saurimoënsis | Metropolitan Archdiocese | Roman | Saurímo | 10 August 1975 | 77,000 |
| Sumbe | Sumbensis | Diocese | Roman | Luanda | 10 August 1975 | 60,000 |
| Uíje | Uiiensis | Diocese | Roman | Luanda | 14 March 1967 | 63,530 |
| Viana | Viananensis | Diocese | Roman | Luanda | 6 June 2007 | 17,206 |
Question:
for how long has the roman catholic diocese of luandensis been established in angola?
Answer:
418 years