The former Bolton and Blackburn boss reaches his century on Tuesday when Cardiff visit Upton Park in the third round of the Capital One Cup.
A lone win has made for a difficult start to the new league campaign but having secured promotion and then a top-10 finish back in the Premier League, the 58-year-old is pleased with his overall achievements.
"Obviously I'm very pleased with the record we had in the Premier League last year and the year before we were expected to do well in the Championship," he said.
"If you look at the stats for how many teams are promoted the season after they were relegated you'll find that there are very few, around 20 per cent who actually manage it.
"We've done everything that we said we would do, not just me and the backroom staff, but also the chairman and the vice-chairman and everyone else behind the scenes.
"We set out with the plan to get promoted in the first year - we did that. The second year we planned to stay up and in the end we surpassed expectations and finished 10th.
"Now we've got to bring a sustainable balance to the squad which is going to keep us in the Premier League for many, many years. It's probably unacceptable in today's football but we have to convince everybody that growing slowly is the right way."
Allardyce, who has also managed at Blackpool, Notts County and Newcastle, lamented the fact that managing a club for 100 games has now become a celebrated achievement.
Speaking after Paolo Di Canio became the first Premier League casualty of the season, he added: "If it's 300 games or 400 games, fine, but 100 games should be more commonplace than it is.
"The constant change of managers which we're now faced with has turned reaching 100 games into a bit of an achievement. For me, that's pretty disappointing."
Allardyce has already masterminded a league victory over Cardiff but expects a tough test.
"Malky (Mackay's) done a great job; his team are well organised and they know what's expected of them.
"We had a tough match against Cheltenham in the last round and I'm expecting another tough game against Cardiff."